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## Big Ideas Math Book 1st Grade Answer Key Chapter 13 Two – and Three – Dimensional Shapes

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**Vocabulary**

**Lesson: 1 Sort Two-Dimensional Shapes**

**Lesson: 2 Describe Two-Dimensional Shapes**

**Lesson: 3 Combine Two-Dimensional Shapes**

**Lesson: 4 Create More Shapes**

**Lesson: 5 Take Apart Two-Dimensional Shapes**

**Lesson: 6 Sort Three-Dimensional Shapes**

**Lesson: 7 Describe Three-Dimensional Shapes**

**Lesson: 8 Combine Three-Dimensional Shapes**

**Lesson: 9 Take Apart Three-Dimensional Shapes**

**Chapter – 13: Two – and Three – Dimensional Shapes**

- Two – and Three – Dimensional Shapes Performance Task
- Two – and Three – Dimensional Shapes Chapter Practice

### Two – and Three – Dimensional Shapes Vocabulary

**Organize It**

Review Words:

hexagon

square

Use the review words to complete the graphic organizer.

Answer:

Explanation:

Above given figures are

Square : A Square is a flat shape with 4 equal sides and every angle is a right angle (90°).

Hexagon : A regular hexagon is a closed shape polygon which has six equal sides and six equal angles. In case of any regular polygon, all its sides and angles are equal.

**Define It**

Use your vocabulary cards to identify the words. Find each word in the word search.

Answer:

Explanation:

Cone : A cone is a three- dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. In the above figure, the arrow is pointing towards the apex or vertex.

Cube: A line segment formed where two edges meet. A cube has 12 edges. Because all faces are squares and congruent to each other, all 12 edges are the same length. In the above figure, the arrow is pointing towards edge.

Triangle: In geometry, a triangle is a closed two- dimensional shape with three straight sides. A triangle is also a polygon. In the above figure the arrow is pointing towards side.

### Lesson 13.1 Sort Two-Dimensional Shapes

**Explore and Grow**

Sort the Shape Sort Cards. Explain how you sorted.

Answer:

Explanation:

Sort the Shape Sort Cards means we need some shapes, we take print out shapes(in color) and then cut them out, or print shapes(black and white) on different colors of paper or card, cut them out, then mix them up. Or we might like to color them by our self. Now we have our shapes, let’s sort them by color. In the above figure we are given with shapes and shapes in color now we sort shapes according to colors as shown above.

**Show and Grow**

Question 1.

Circle the closed shapes with 4 vertices.

Answer:

Explanation:

In the above given figures we have closed shapes with 4 vertices, so I have circled them. 2 are rectangles, one without color, one with blue color, one is square with no color, One is rhombus with blue in color these are closed shapes with 4 vertices.

Question 2.

Circle the closed shapes with no straight sides.

Answer:

Explanation:

In the above given figures we have closed shapes with no straight sides so I have circled them.

3 are circles, one without color, one with green color small in shape, One more circle in green color with little big in shape, these are closed shapes with no straight sides.

**Apply and Grow: Practice**

Question 3.

Circle the closed shapes with only 3 vertices.

Answer:

Explanation:

In the above given figures we have closed shapes with 3 vertices, so I have circled them. 3 are triangles, one without color, one with green color and one shape is right angled triangle these are closed shapes with 3 vertices.

Question 4.

Circle the closed shapes with only L-shaped vertices.

Answer:

Explanation:

In the above given figures we have closed shapes with only L-shaped vertices, so I have circled them. one rectangle without color, one square with purple color and one shape is right angled triangle with purple color these are closed shapes with only L-shaped vertices.

Question 5.

Circle the shapes with more than 4 straight sides.

Answer:

Explanation:

In the above given figures we have shapes with more than 4 straight sides, so I have circled them. one rectangle without color, one trapezium with no color

and one square with orange color are shapes with more than 4 straight sides.

Question 6.

Circle the shapes with 6 straight sides.

Answer:

Explanation:

In the above given figures we have shapes with 6 straight sides, so I have circled them. one little big hexagon without color and one small hexagon with blue color are shapes with 6 straight sides.

Question 7.

**DIG DEEPER!**

Draw 2 different two-dimensional shapes that have only 4 straight sides.

Answer:

Explanation:

I have drawn 2 different two-dimensional shapes that have only 4 straight sides are square shape with no color and rectangle shape in green color both are two-dimensional shapes with only 4 straight sides.

**Think and Grow: Modeling Real Life**

Use the clues to color the picture.

Only 3 straight sides: blue

Only 4 straight sides: green

No straight sides: yellow

More than 4 vertices: red

Answer:

Explanation:

I have used the given clues to color the picture.

Only 3 straight sides triangles with blue,

Only 4 straight sides square and rhombus with green,

No straight sides circles with yellow,

More than 4 vertices hexagon with red.

**Show and Grow**

Question 8.

Use the clues to color the picture.

Only 3 vertices: green

All L-shaped vertices: orange

Only 4 straight sides and

no L-shaped vertices: blue

6 straight sides: yellow

Answer:

Explanation:

I have used the given clues to color the picture.

Only 3 vertices triangles with green,

All L-shaped vertices rectangle with orange,

Only 4 straight sides rhombus and

no L-shaped vertices with blue,

6 straight sides hexagon with yellow.

### Sort Two-Dimensional Shapes Practice 13.1

Question 1.

Circle the closed shapes with no straight sides.

Answer:

Explanation:

In the above given figures we have shapes with no straight sides, so I have circled them. one small circle with blue color, one little big circle with no color and one curve are shapes with no straight sides.

Question 2.

Circle the closed shapes with 4 sides of the same length.

Answer:

Explanation:

In the above given figures we have shapes with 4 sides of the same length, so I have circled them. one small rhombus with no color, one little big rhombus with green color and one square with no color are shapes with 4 sides of the same length.

Question 3.

Circle the shapes with no vertices.

Answer:

Explanation:

In the above given figures we have shapes with no vertices, so I have circled them. one small circle with no color, one little big circle with red color and one big circle with red color are shapes with vertices.

Question 4.

Circle the shapes with more than 4 vertices.

Answer:

Explanation:

In the above given figures we have shapes with more than 4 vertices, so I have circled them.

One is Pentagon with no color, one hexagon with orange color are shapes with more than 4 vertices.

Question 5.

**DIG DEEPER!**

Draw 2 different two-dimensional shapes with

2 long straight sides and 2 short straight sides.

Answer:

Explanation:

In the above figures we have drawn 2 different two-dimensional shapes one triangle shape with 2 long straight sides and one rectangle shape with 2 short straight sides.

Question 6.

**Modeling Real Life**

Use the clues to color the picture.

Only 3 vertices: yellow

Only 4 sides: black

Only 1 straight side: orange

No straight sides: blue

Answer:

Explanation:

Using the clues to colored the picture,

Only 3 vertices triangle with yellow,

Only 4 sides square with black,

Only 1 straight side semi circles with orange,

and no straight sides circles with blue.

**Review & Refresh**

Question 7.

Circle the longer object.

Answer:

Explanation:

In the given images tennis bat is longer than the color brush so circled it with circle.

### Lesson 13.2 Describe Two-Dimensional Shapes

**Explore and Grow**

Which shape has three sides?

Which shapes have 4 sides and 4 L-shaped vertices?

Which shapes have 4 sides and no L-shaped vertices?

Use your materials to build each shape you circled.

Answer:

Explanation:

Triangle shape has three sides,

Rectangle and Square shapes have 4 sides as 1,2,3,4 and

4 L-shaped vertices as a, b, c, d.

1 Trapezium, 2 rhombus are shapes have 4 sides as 1,2,3,4 and

no L-shaped vertices pointed them.

**Show and Grow**

Question 1.

Answer:

Explanation:

Given Hexagon shape which has 6 straight sides as 1,2,3,4,5,6 and 6 vertices as a, b, c, d ,e, f.

Question 2.

Answer:

Explanation:

Given Hexagon shape which has 6 straight sides as 1,2,3,4,5,6 and 6 vertices as a, b, c, d ,e, f.

Question 3.

Answer:

Explanation:

Given right angled triangle has 3 straight sides as

1,2,3 and 3 vertices as a, b, c.

Question 4.

Answer:

Explanation:

Given rhombus has 4 straight sides as 1,2,3,4 and

4 vertices as a, b, c, d.

**Apply and Grow: Practice**

Question 5.

Answer:

Explanation:

Given rhombus has 4 straight sides as 1,2,3,4 and

4 vertices as a, b, c, d.

Question 6.

Answer:

Explanation:

Given right angled triangle has 3 straight sides 1,2,3 and 3 vertices as a, b, c.

Question 8.

Answer:

Explanation:

Given Hexagon shape which has 6 straight sides as 1,2,3,4,5,6 and 6 vertices as a, b, c, d ,e, f.

Circle the attributes of the shape.

Explanation:

Triangle has 3 straight sides and 3 vertices so circled the attributes of the shape.

Question 10.

Answer:

Explanation:

Square has 4 straight sides of the same length , 4 vertices and its closed shape so circled the attributes of the shape.

Question 11.

**MP Precision**

Match each shape with an attribute that describes it.

Circle Rectangle Hexagon

6 straight sides 0 vertices only 4 vertices

Answer:

Explanation:

We know Circle has 0 vertices,

Rectangle has only 4 vertices and

Hexagon has 6 straight sides so matched

according to their attributes that describe shape about them.

**Think and Grow: Modeling Real Life**

A board game has ‘4 sides and 4 L-shaped vertices.

Name and draw two shapes for the board game.

Circle: Square Hexagon Trapezoid Rectangle

Draw shapes:

Answer:

Explanation :

Circled Square and Rectangle.

Given a board game has ‘4 sides and 4 L-shaped vertices.

we can draw two shapes for the board game as

Square and Rectangle

with Square shape of 4 sides as 1,2,3,4 and

4 L-shaped vertices as a, b, c, d

and Rectangle shape of 4 sides as 1,2,3,4 and

4 L-shaped vertices as a, b, c, d.

Show and Grow

Question 12.

A board game has 4 sides and no L-shaped vertices.

Name and draw two shapes for the board game.

Circle: Triangle Trapezoid Rhombus Square

Draw shapes:

Answer:

Explanation:

Given a board game has 4 sides and no L-shaped vertices.

we can draw two shapes for the board game as

Trapezoid and Rhombus with as Trapezoid shape has 4 sides

as 1,2,3,4 and no L-shaped vertices

and Rhombus shape of 4 sides as 1,2,3,4 and

no L-shaped vertices.

### Describe Two-Dimensional Shapes Practice 13.2

Question 1.

Answer:

Explanation:

Given Hexagon shape which has 6 straight sides as 1,2,3,4,5,6 and 6 vertices as a, b, c, d ,e, f.

Question 2.

Answer:

Explanation:

Given rhombus has 4 straight sides as 1,2,3,4 and 4 vertices as a, b, c, d.

Question 3.

Answer:

Explanation:

Given circle has no straight sides and no vertices.

Question 4.

Answer:

Explanation:

Given triangle has 3 straight sides and 3 vertices.

Circle the attributes of the shape.

Question 5.

Answer:

Explanation:

Trapezoid has 4 straight sides and its closed shape so circled the attributes of the Trapezoid shape.

Question 6.

Answer:

Explanation:

Rectangle has 4 straight sides

and 4 vertices circled the attributes of the Rectangle shape.

Question 7.

**MP Precision**

Match each shape with an attribute that describes it.

Triangle Trapezoid Circle

only 3 straight sides 0 straight sides 4 vertices

Answer:

Explanation:

We know Triangle has only 3 straight sides,

Trapezoid has 4 vertices and

Circle has 0 straight sides, so matched

according to their attributes that describe shape about them.

Question 8.

**Modeling Real Life**

A photograph has 4 straight sides of the same length and 4 vertices. Draw and name two possible shapes for the photograph.

_Square___ , __Rhombus__

Answer:

Explanation:

Given a photograph has 4 straight sides of the same length and 4 vertices.

So two possible shapes for the photograph are one is Square and one

is Rhombus both has 4 straight sides of the same length and 4 vertices.

So drawn as shown in the figure above.

**Review & Refresh**

Question 9.

**MP Reasoning**

Which sentences are correct?

There are 5 ponies.

There are 7 deer.

There are more goats than ponies.

The numbers of deer and goats are the same.

Answer:

Sentences 2. There are 7 deer and

3. There are more goats than ponies are correct.

Explanation:

Given 4 sentences as

There are 5 ponies.

There are 7 deer.

There are more goats than ponies.

The numbers of deer and goats are the same.

1.There are 5 ponies. which is incorrect as there are only 4 ponies,

2. There are 7 deer yes correct as there are 7 deer,

3. There are more goats than ponies correct because 8 goats are there

and 4 ponies so goats are more,

4. The numbers of deer and goats are the same is incorrect

as number of deer are 7 and goats are 8 both are not the same,

Therefore Sentences 2. There are 7 deer and

3. There are more goats than ponies are correct.

### Lesson 13.3 Combine Two-Dimensional Shapes

**Explore and Grow**

Use 2 triangles to make a new two-dimensional shape. Draw your shape.

Answer:

Explanation:

Using 2 triangles to make a new two-dimensional shape

We got Rhombus shape.

Use 3 triangles to make a new two-dimensional shape. Draw your shape.

Answer:

Explanation:

Using 3 triangles to make a new two-dimensional shape

We got Trapezoid shape.

**Show and Grow**

Question 1.

Answer:

Explanation:

2 Trapezoids make a Hexagon.

Question 2.

Answer:

Explanation:

3 Rhombus make a Hexagon.

Question 3.

Answer:

Explanation:

2 Semi Circles make a one Circle.

Question 4.

Answer:

Explanation:

2 Right Angled Triangles make a Rectangle.

**Apply and Grow: Practice**

Question 5.

Answer:

Explanation:

3 Triangles make a Trapezoid.

Question 6.

Answer:

Explanation:

2 Squares make a Rectangle.

Question 7.

Draw the shape you can use 2 times to make a .

Answer:

Explanation:

We take 2 times trapezoid to make a hexagon as

shown in the figure above.

Question 8.

Draw the shape you can use 3 times to make a .

Answer:

Explanation:

We take 3 times rhombus to make a hexagon as

shown in the figure above.

Question 9.

**MP Choose Tools**

Which shape can you use 2 times to make a ?

Answer:

Explanation:

Triangle shape can be used 2 times to make a Rhombus

as shown in the figure.

Question 10.

**DIG DEEPER!**

Draw to show 2 different ways you can use pattern blocks to make the shape.

Answer:

Explanation:

We can use 2 different ways pattern blocks to make the shape

one is of triangle and another is square.

Think and Grow: Modeling Real Life

Use the number of pattern blocks to fill the shape on the sign. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

First time we use 3 blocks of trapezoid pattern blocks to fill the shape on the sign, second time we use 4 blocks in that 3 blocks of triangles and 1 block of hexagon to fill the shape on the sign.

**Show and Grow**

Question 11.

Use 3 pattern blocks to fill the shape on the sign. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

We use 3 pattern blocks to fill the shape on the sign.

Each block of triangle, one trapezoid and one rhombus to fill the shape on the sign.

### Combine Two-Dimensional Shapes Practice 13.3

Question 1.

Answer:

Explanation:

2 triangles make a rhombus as shown in the figure.

Question 2.

Answer:

Explanation:

As shown above in the figure 2 rhombus fill the shape of

the given sign.

Question 3.

Answer:

Explanation:

6 triangles make a hexagon as shown in the figure.

Question 4.

Answer:

Explanation:

2 quadrant makes a half semi circle as shown

in the figure above.

**MP Choose Tools**

Which 2 pattern blocks can you use to make the shape?

Question 5.

Answer:

Explanation:

We use one rhombus and one triangle blocks to make

the trapezoid shape as shown in the figure.

Question 6.

Answer:

Explanation:

We use one rhombus and one triangle blocks to make

the triangle shape as shown in the figure.

Question 7.

**Modeling Real Life**

Use 5 pattern blocks to fill the shape on the sign. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

We have used 5 pattern blocks to fill the shape on the sign and 4 blocks of triangles,1 block of square, 2 trapezoids, 1 rhombus and 1 hexagon to complete the Newton’s house.

**Review & Refresh**

Write the name

Question 8.

______6____: ____00______ :__00________

Answer:

6:00:00

Explanation:

The clock is showing 6 Hours, Zero Minutes and Zero Seconds.

Question 9.

___8_______: ___30_______: ___00_______

Answer:

8:30:00

Explanation:

The clock is showing 8 Hours, Thirty Minutes and Zero Seconds.

### Lesson 13.4 Create More Shapes

**Explore and Grow**

Use two or more shapes to make the center of the flower. Use more shapes to fill in the rest of the flower.

Answer:

Explanation:

Used trapezoid, rhombus and triangle shapes to make the center of the flower

and used more shapes to fill in the rest of the flower.

**Show and Grow**

Question 1.

Use to make a . Draw to show your work.

Answer:

Explanation:

4 quadrants makes a circle as shown in the figure,

Step 1: Take one quadrant place it,

Step 2 : Take one more quadrant and place it makes semi circle,

Step 3 : Place one more quadrant as shown,

Step 4 : Now placing one more quadrant

and joining all together makes a full circle as shown.

**Apply and Grow: Practice**

Question 2.

Use to make a . Draw to show your work.

Answer:

Explanation:

4 right angled triangles makes rectangle as shown in the figure,

Step 1: Take one right angled triangle place it,

Step 2 : Take one more right angled triangle and place it

as shown it becomes square

Step 3 : Place one right angled triangle as shown,

Step 4 : Now place one more right angled triangle as shown

now joining all together makes a rectangle full as shown.

Question 3.

Use and to make a . Draw to show your work.

Answer:

Explanation:

4 triangles makes rhombus as shown in the figure,

Step 1: Take one triangle place it,

Step 2 : Take one more triangle and place it

as shown it becomes rhombus

Step 3 : Place one triangle as shown, it becomes trapezoid

Step 4 : Now place one more triangle as shown

now joining all together makes a rhombus full as shown.

Question 4.

Draw the shape you can use 3 times to make a .

Answer:

Explanation:

We take 3 quadrants to make a shape as shown in the figure,

Step 1: Take one quadrant place it,

Step 2 : Take one more quadrant and place it makes semi circle,

Step 3 : Place one more quadrant as shown,

and joining all together makes a shape as required.

Question 5.

Draw the shape you can use 4 times to make a .

Answer:

Explanation:

We can use triangle 4 times to make a Triangle as

shown in four steps above.

Step 1: Take one triangle place it,

Step 2 : Take one more triangle and place it beside

the first one we get rhombus,

Step 3 : Place one more triangle beside rhombus as shown,

we get trapezoid,

Step 4: Now we place one more triangle on top of

trapezoid after joining all together makes a triangle shape.

Question 6.

**DIG DEEPER!**

Draw to show two different ways you con join the shapes on the left to make the larger shape.

Answer:

Explanation:

First Way

Step 1: We take rectangle as shown

Step 2: We take one right angled triangle and join

Step 3: We take one more right angled triangle and place

with another right angled triangle as shown above we get the larger shape.

Second Way:

Step 1: Here we first place right angled triangle,

Step 2 : Take another right angled triangle and place as shown

beside the previous right angled triangle,

Step 3 : Now we join with a rectangle as shown ,

we get the larger shape.

**Think and Grow: Modeling Real Life**

Use pattern blocks to complete the puzzle. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

As shown above used 2 triangles, 1 square,

1 trapezoid, 3 rhombus and 1 more rhombus pattern

to complete the puzzle.

**Show and Grow**

Question 7.

Use pattern blocks to complete the puzzle. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

As shown above used 5 triangles, 1 square,

2 rhombus, 2 trapezoid and 1 more rhombus pattern

blocks to complete the puzzle.

### Create More Shapes Practice 13.4

Question 1.

Use to make a larger . Draw to show your work.

Answer:

Explanation:

We can use square 4 times to make a Square as

shown in four steps above.

Step 1: Take one square place it,

Step 2 : Take one more square and place it below

the first one we get rectangle,

Step 3 : Place one more square beside as shown,

Step 4: Now we place one more square as shown

after joining all together makes a square shape.

Question 2.

Use to make a . Draw to show your work.

Answer:

Explanation:

We can use right angled triangles 4 times to make a Rhombus as

shown in four steps above.

Step 1: Take one right angled triangle place it,

Step 2 : Take one more right angled triangle and place it beside

the first one as shown

Step 3 : Place one more right angled triangle as shown,

Step 4: Now we place one more right angled triangle

after joining all together makes a rhombus shape.

Question 3.

**DIG DEEPER!**

Draw to show two ways you can combine the 3 shapes on the left to make the larger shape.

Answer:

Explanation:

First Way

Step 1: We take square as shown,

Step 2: We take one rectangle and join with square,

Step 3: We take one more square and place

as shown above we get the larger shape.

Second Way:

Step 1: Here we first place rectangle,

Step 2 : Take square and place as shown,

Step 3 : Now we take one more square and join

as shown in figure, we get the larger shape.

Question 4.

**Modeling Real Life**

Use pattern blocks to complete the puzzle. How many of each block do you use? Draw to show your work.

Answer:

Explanation:

As shown above used 1 triangle, 2 squares,

3 rhombus, 2 trapezoid and 1 more rhombus pattern

blocks to complete the puzzle.

**Review & Refresh**

Question 5.

Answer:

17 is less than 19.

Explanation:

As 17 is less than < 19, we select less than.

Question 6.

Answer:

12 is greater than 11.

Explanation:

As 12 is greater than > 11, we select greater than

### Lesson 13.5 Take Apart Two-Dimensional Shapes

**Explore and Grow**

Draw lines to take apart each figure.

Answer:

Explanation:

1. We draw lines to show two rectangles as

shown in the above figure,

2. We draw lines to show four squares as

shown in the above figure,

3. We draw lines to show two triangles and one

rectangle as shown in the above figure,

4. We draw lines to show two triangles and two

square as shown in the above figure.

**Show and Grow**

Draw one line to show the parts.

Question 1.

2 triangles

Answer:

Explanation:

Drawn one line in between rectangle,

as shown we get 2 triangles.

Question 2.

2 triangles

Answer:

Explanation:

Drawn one line in between rectangle,

as shown we get 2 triangles.

Question 3.

2 trapezoids

Answer:

Explanation:

Drawn one line in between trapezoid,

as shown we get 2 trapezoids.

Question 4.

1 triangle and 1 trapezoid

Answer:

Explanation:

Drawn one line in between triangle

as shown we get 1 triangle and 1 trapezoid.

**Apply and Grow: Practice**

Draw one line to show the parts.

Question 5.

2 triangles

Answer:

Explanation:

Drawn one line in between triangle

as shown we get 2 triangles.

Question 6.

2 squares

Answer:

Explanation:

Drawn one line in between rectangle

as shown we get 2 squares.

Draw two lines to show the parts.

Question 7.

2 triangles and 1 trapezoid

Answer:

Explanation:

Drawn two lines in between rectangle

as shown we get 2 triangles and 1 trapezoid.

Question 8.

2 triangles and 1 rectangle

Answer:

Explanation:

Drawn two lines in between hexagon

as shown we get 2 triangles and 1 rectangle.

Question 9.

**MP Reasoning**

Show how to use the shapes to make the hexagon.

Answer:

Explanation:

In first hexagon shape we made 1 trapezoid and

3 triangles are made as shown in the figure.

In second hexagon shape we made 2 rhombus and

2 triangles as shown in the figure.

Question 10.

**MP Reasoning**

Show how to use the shapes to make a circle. How many of each shape do you use?

Explanation:

In the first circle we need 4 quadrants to make a circle,

In second circle we need 2 semi circles to make a circle.

**Think and Grow: Modeling Real Life**

How many squares can you find on the Four Square court?

_____5_______ squares

Answer:

We have 5 squares in a Four Square Court.

Explanation:

We are given with a Four Square Court,

in that we have 4 squares and the outer boundary has

one square making in total 5 squares..

**Show and Grow**

Question 11.

How many squares can you find on the magic square?

_____14_______ squares

Answer:

We have 14 squares on the magic square

Explanation:

We are given the magic square on that we have first 9 squares plus

one in the outer boundary, 4 squares of 4 blocks from the 9 squares.

### Take Apart Two-Dimensional Shapes Practice 13.5

Draw one line to show the parts.

Question 1.

2 trapezoids

Answer:

Explanation:

Drawn one line in between Hexagon,

as shown we get 2 trapezoids.

Question 2.

1 rectangle and 1 square

Answer:

Explanation:

Drawn one line in between Rectangle,

as shown we get 1 rectangle and 1 square .

Draw two lines to show the parts.

Question 3.

3 triangles

Answer:

Explanation:

Drawn two lines in between Trapezoid

as shown we get 3 triangles.

Question 4.

1 rectangle and 2 triangles

Answer:

Explanation:

Drawn two lines in between Square

as shown we get 1 rectangle and 2 triangles.

Question 5.

**MP Reasoning**

Show how to use the shapes to make the .

Answer:

Explanation:

In first rhombus shape we made 1 rhombus and

2 triangles are made as shown in the figure.

In second rhombus shape we made 1 trapezoid and

1 triangle as shown in the figure.

Question 6.

**MP Reasoning**

Show how to use the shapes to make the hexagon. How many of each shape do you use?

Answer:

Explanation:

In first we use 3 rhombus to make a hexagon

as shown in the figure.

In second we use 6 triangles to make a hexagon

as shown in the figure.

Question 7.

**Modeling Real Life**

How many triangles are in Descartes’s design?

Answer:

Explanation:

In Descartes’s design we have total 5 triangles,

4 inside the triangle and one outer boundary,

Making a total of 5 triangles in Descartes’s design.

**Review & Refresh**

Question 8.

Circle the three-dimensional shapes. Draw rectangles around the two-dimensional shapes.

Answer:

Explanation:

Circled the three -dimensional shapes cube, books and sphere. Drawn rectangle around the dollar because it is a two-dimensional shape.

### Lesson 13.6 Sort Three-Dimensional Shapes

**Explore and Grow**

Sort the Three-Dimensional Shape Cards. Explain how you sorted.

Answer:

Explanation:

Sort the Shape Cards means we need some shapes,

we take print out shapes(in color) and then cut them out,

or print shapes(black and white) on different colors of paper or card,

cut them out, then mix them up. Or we might like to color them

by our self. Now we have our three dimensional shapes, let’s sort them by

shape and name. In the above figure we are given with shape name,

now we sort shapes according to their names as shown above.

**Show and Grow**

Question 1.

Circle the shapes with flat surfaces that are circles.

Answer:

Explanation:

Circled the shapes 2 cones, 3 cylinders as they have

flat surfaces that are circles.

Question 2.

Circle the shapes with both flat and curved surfaces.

Answer:

Explanation:

Circled the shapes with both flat and curved surfaces

as 2 cones, 2 cubes , 1 cuboid and 2 cylinders.

**Apply and Grow: Practice**

Question 3.

Circle the shapes with 1 or more flat surfaces.

Answer:

Explanation:

Circled the shapes with 1 or more flat surfaces,

as 2 cubes, 1 cone, 1 cuboid and 2 cylinders.

Question 4.

Circle the shapes with a curved surface.

Answer:

Explanation:

We know Cylinder, Cone, Sphere have curved

face so circled 2 cones, 2 spheres and one cylinder

shapes as they have curved surface.

Question 5.

Circle the shapes with only 2 flat surfaces.

Answer:

Explanation:

Circled the shapes with only 2 flat surfaces are

2 cylinders as shown in picture above.

Question 6.

**MP Structure**

Match each shape to its group.

Answer:

Explanation:

Matched each shape according to its group as

Cube and Cuboid has only flat surfaces, Cone &

Cylinder have flat and curved surfaces and Sphere

have only a curved surface.

**Think and Grow: Modeling Real Life**

You need to find an object that has no flat surfaces for a scavenger hunt. Circle the objects you can use.

Answer:

Explanation:

Objects that has no flat surfaces for a scavenger hunt are

Big Ball, Cool Drink Tin and Cricket Ball circled them as

shown in the figure above.

**Show and Grow**

Question 7.

You need to find an object that has only two flat surfaces for a scavenger hunt. Circle the objects you can use.

Answer:

Explanation:

Object that has only two flat surfaces for a scavenger hunt are

1 Musical Drum, 1 Log and Colored Cylinder so circled them as

shown in the figure above.

### Sort Three-Dimensional Shapes Practice 13.6

Question 1.

Circle the shapes with no flat surface.

Answer:

Explanation:

Circled the shapes with no flat surface

as 3 spheres as shown in the figure.

Question 2.

Circle the shapes with ﬂat surfaces that are rectangles.

Answer:

Explanation:

Circled the shapes with ﬂat surfaces that are rectangles

as 3 cuboids as shown in the figure above.

Question 3.

Circle the shapes with more than 2 ﬂat surfaces

Answer:

Explanation:

Circled the shapes with more than 2 ﬂat surfaces as

2 cuboids, 1 cube and one cylinder as shown in the figure above.

Question 4.

**MP Structure**

Match each shape to its group.

Answer:

Explanation:

Matched each shape according to its group as

Sphere have no flat surface, Cuboid, Cylinder and

Cube have more than 1 flat surface, Cone have only 1

flat surface.

Question 5.

**Modeling Real Life**

You need to find an object that has both flat and curved surfaces for a scavenger hunt. Circle the objects you can use.

Answer:

Explanation:

Objects that has both flat and curved surfaces for a scavenger hunt

are one cuboid shaped, one cone shaped, one clay, one glass jar,

one glue stick, one tin so circled them as shown in the figure above.

**Review & Refresh**

Question 6.

30 + 30 = ___60__

Answer:

30 + 30 = 60

Explanation:

Given expression as 30 + 30 we add we get

result as 60.

Question 7.

60 + 20 = ____80__

Answer:

60 + 20 = 80

Explanation:

Given expression as 60 + 20 we add we get

result as 80.

Question 8.

50 + 10 = ___60____

Answer:

50 + 10 = 60

Explanation:

Given expression as 50 + 10 we add we get

result as 60.

Question 9.

30 + 40 = ____70___

Answer:

30 + 40 = 70

Explanation:

Given expression as 30 + 40 we add we get

result as 70.

### Lesson 13.7 Describe Three-Dimensional Shapes

**Explore and Grow**

Use your materials to build one of the three dimensional shapes shown. Circle the shape you make. How many flat surfaces does your shape have? How many vertices does your shape have?

____6_____ flat surfaces

_____8_____ vertices

Answer:

Explanation:

We have build three dimensional shape of a Cube as shown above,

A cube has 6 flat surfaces as (HEAD, GFBC, ABFE, DCGH, HEFG, ABCD),

A cube has 8 vertices as 8 (A, B, C, D, E, F, G, H).

**Show and Grow**

Question 1.

__6_______ flat surfaces ____8_____ vertices ____12_____ edges

Answer:

Explanation:

A cuboid is a three dimensional shape has 6 flat surfaces,

8 vertices and 12 edges as shown above.

**Apply and Grow: Practice**

Question 2.

__2______ flat surfaces _____0____ vertices ____0_____ edges

Answer:

Explanation:

A cylinder is a three dimensional shape has 2 flat surfaces,

0 vertices and 0 edges as shown above.

Question 3.

___6______ flat surfaces ____8_____ vertices ______12___ edges

Answer:

Explanation:

A cuboid three dimensional shape has 6 flat surfaces,

8 vertices and 12 edges as shown above.

Circle the attributes of the shape.

Question 4.

Answer:

Explanation:

Cone is a three dimensional shape,

A cone has 1 flat surfaces, 1 vertices so circled attributes as

1 flat surface.

Question 5.

Answer:

Explanation:

Cube is a three dimensional shape,

A cube has 6 flat surfaces , 8 vertices and 12 edges so

circled the attributes as 6 flat surfaces and 12 edges.

Question 6.

I am a three-dimensional shape that has no ﬂat surfaces, no vertices, and no edges. What am I?

_Sphere.___

Answer:

Explanation:

A three-dimensional shape that has no ﬂat surfaces,

no vertices, and no edges is a Sphere.

Question 7.

I am a three-dimensional shape that has I flat surface, I vertex, and no edges. What am I?

______Cone__.

Answer:

Explanation:

A three-dimensional shape that has 1 flat surface,

1 vertex and no edges is Cone.

Question 8.

**DIG DEEPER!**

Newton buys an item that has 2 more flat surfaces than edges. Which item does he buy?

Answer:

Newton buys Dog Food which has 2 more

flat surfaces than edges.

Explanation:

As in given images we have Dog Food which is in cylinder

shape and has 2 more flat surfaces than edges So Newton

buys Dog Food.

**Think and Grow: Modeling Real Life**

Circle the object below the table that has 0 flat surfaces. Draw a line through the object above the basketball that has 12 edges.

Answer:

Explanation:

Circled the object basket ball below the table that has 0 flat surfaces

and I have drawn a line through the tissue paper box

above the basketball that has 12 edges which is in cuboid shape.

**Show and Grow**

Question 9.

Circle the object in front of the campers that has more than 2 flat surfaces. Draw a line through the object behind the logs that has I vertex and I flat surface.

Answer:

Explanation:

Circled the objects in front of the campers that has more than 2 flat surfaces are First Aid Box, Dust Bin Box and Logs , drawn a line through the object

Foot Ball behind the logs that has I vertex and I flat surface are tent, 1 light display in cone shape as shown in the image above.

### Describe Three-Dimensional Shapes Practice 13.7

Question 1.

____0_____ flat surfaces ____0_____ vertices ____0___ edges

Answer:

0 flat surfaces, 0 vertices and 0 edges.

Explanation:

A sphere has 0 flat surfaces, 0 vertices and 0 edges.

Question 2.

__6___ flat surfaces ____8___ vertices ___12__ edges

Answer:

Explanation:

Cube is a three dimensional shape,

A cube has 6 flat surfaces , 8 vertices and 12 edges.

Question 3.

Circle the shape that has the same number of vertices as edges.

Answer:

Cylinder

Explanation:

Cylinder has the same number of vertices as edges that

is zero. So we circled the shape cylinder.

Question 4.

Circle the shape that has the same number of faces as vertices.

Answer:

Cone

Explanation:

Cone has the same number of faces as vertices as it has

1 flat surface and 1 vertices so we circled the shape cone.

Circle the attributes of the shape.

Question 5.

Answer:

Explanation:

Cylinder has 2 flat surfaces so circled the attributes of it.

Question 6.

Answer:

Explanation:

Given Rectangular Prism it is a three – dimensional shape,

with 12 edges so circled the attributes of them as shown above.

Question 7.

**DIG DEEPER!**

Descartes buys an item that has 2 fewer flat surfaces than vertices.

Which item does he buy?

Answer:

Descartes buy CAT TREATS that has 2 fewer flat surfaces than vertices.

Explanation:

As CAT TREATS is in shape of cuboid shape,

as we know a cuboid has 6 flat surfaces and 8 vertices,

So Descartes buy CAT TREATS which has 2 fewer

flat surfaces than vertices.

Question 8.

**Modeling Real Life**

Circle the object next to the hat that has 6 square flat surfaces. Draw a line through the object in front of the hat that has 0 edges and 1 vertex.

Answer:

Explanation:

Circled the objects next to the hat that has 6 square flat surfaces

are cube object and cuboid object which have 6 flat surfaces,

The objects in front of the hat is paint bucket so drawn a line to

objects that has 0 edges and 1 vertex are traffic cones, one small cone

as shown in the picture above.

**Review & Refresh**

Question 9.

20 + 18 = ______38_____

Answer:

20 + 18 = 38

Explanation:

Given expression as 20 + 18 we add we get

result as 38.

Question 10.

40 + 25 = ____65______

Answer:

40 + 25 = 65

Explanation:

Given expression as 40 + 25 we add we get

result as 65.

Question 11.

36 + 69 = ___105________

Answer:

36 + 69 = 105

Explanation:

Given expression as 36 + 69 we add we get

result as 105.

Question 12.

9 + 90 = _____99______

Answer:

9 + 90 = 99

Explanation:

Given expression as 9 + 90 we add we get

result as 99.

Question 13.

18 + 70 = _____88______

Answer:

18 + 70 = 88

Explanation:

Given expression as 18 + 70 we add we get

result as 88.

Question 14.

27 + 50 = ____77_______

Answer:

27 + 50 = 77

Explanation:

Given expression as 27 + 50 we add we get

result as 77.

### Lesson 13.8 Combine Three-Dimensional Shapes

**Explore and Grow**

Which three-dimensional shapes can you make using cubes? Build one of the shapes.

Answer:

Cuboid

Explanation:

Using cubes we came make three-dimensional shape as cuboid

as shown above.

**Show and Grow**

Circle the new shape that you can make.

Question 1.

Answer:

Explanation:

Given shapes are cube and cone using them we get new shape

cube with cone circled as shown in the picture above.

Question 2.

Answer:

Explanation:

Given shapes are cylinder and cuboid using them we get new shape

cylinder with cuboid circled as shown in the picture above.

**Apply and Grow: Practice**

Circle the new shape that you can make.

Question 3.

Answer:

Explanation:

Given shapes are cubes using them we get new shape

as cube on cube circled as shown in the picture above.

Question 4.

Answer:

Explanation:

Given shapes are cone and cuboid using them we get new shape

as cone with cuboid circled as shown in the picture above.

Question 5.

Answer:

Explanation:

Given shapes are cylinder and cube using them we get new shape

as cylinder with cube circled as shown in the picture above.

Question 6.

**DIG DEEPER!**

How many cubes do you need in all to make the next shape?

_____9_____ cubes

Answer:

9 cubes are needed to make the next shape

Explanation:

Given in first shape it is 3 cubes, next shape it is 5 cubes,

in 3rd shape it has 7 cubes as it is increasing by two

or plus two so the next shape will have 7 + 2 = 9 cubes.

Therefore we need 9 cubes to make the next shape.

**Think and Grow: Modeling Real Life**

You build a wall. It is 5 cubes long and 2 cubes tall.

Your friend builds a wall. It is 4 cubes long and 2 cubes tall.

How many more cubes do you use than your friend?

Draw Pictures: You Friend

Equation:

_____1_____ more cubes

Answer:

I used 1 more cube than my friend.

Explanation:

Given I build a wall with 5 cubes long and 2 cubes tall

makes in total 7 blocks and friend builds a wall which has

4 cubes long and 2 cubes tall makes in total of 6 blocks,

So I used one more cube than my friend.

**Show and Grow**

Question 7.

You build a wall. It is 3 cubes long and 3 cubes tall. Your friend builds a wall.

It is 5 cubes long and 3 cubes tall. How many more cubes does your friend use than you?

Draw Pictures: You Friend

Equation:

____2______ more cubes

Answer:

Friend used 2 more cubes than mine.

Explanation:

Given I build a wall with 3 cubes long and 3 cubes tall makes in total 6 blocks and friend builds a wall which has 5 cubes long and 3 cubes tall makes in total of 8 blocks, So my friend used two more cubes than me.

### Combine Three-Dimensional Shapes Practice 13.8

Circle the new shape that you can make.

Question 1.

Answer:

Explanation:

Given shapes are cone and cylinder using them we get new shape

as cone with cylinder circled as shown in the picture above.

Question 2.

Answer:

Explanation:

Given shapes are 2 cylinders using them we get new shape

as cylinder with cylinder circled as shown in the picture above.

Question 3.

**DIG DEEPER!**

How many cubes do you need in all to make the next shape?

______13_______ cubes

Answer:

13 cubes are needed to make the next shape

Explanation:

Given in first shape it is 1 cube, next shape it is 5 cubes,

in 3rd shape it has 9 cubes as it is increasing by four

or plus four so the next shape will have 9 + 4 = 13 cubes.

Therefore we need 13 cubes to make the next shape.

Question 4.

**Modeling Real Life**

You build a wall that is 2 cubes long and ‘4 cubes tall. Your friend builds a wall that is 4 cubes long and 3 cubes tall. How many more cubes does your friend use than you?

_____one________ more cubes

Answer:

Friend used 1 more cube than mine.

Explanation:

Given I build a wall with 2 cubes long and 4 cubes tall makes in total 6 blocks and friend builds a wall which has 4 cubes long and 3 cubes tall makes in total of 7 blocks, So my friend used one more cube than me.

**Review & Refresh**

Question 5.

Order from shortest to longest.

___black______, __green_______, __yellow_______

Answer:

Order from shortest to longest is black, green, yellow

Explanation:

Given color brushes we sort according to the order as among three colors green is least small next small is green brush and the most longest is yellow so order from shortest to longest is black, green, yellow.

### Lesson 13.9 Take Apart Three-Dimensional Shapes

**Explore and Grow**

Circle the three-dimensional shapes used to build the castle.

Answer:

Cone, Cylinder and Cuboid.

Explanation:

We circled the three-dimensional shapes cone, cylinder and

cuboid which are used to build the castle.

**Show and Grow**

Circle the shapes that make up the structure.

Question 1.

Answer:

One Cylinder and One Cone

Explanation:

As shown we use 1 cylinder and 1 cone three-dimensional

shapes to make up the given structure.

Question 2.

Answer:

Two Cylinders

Explanation:

As shown we use 2 cylinders three-dimensional

shape to make up the given structure.

Question 3.

Answer:

Six Cubes and One Cylinder

Explanation:

As shown we use 6 cubes and 1 cylinder three-dimensional

shapes to make up the given structure.

Question 4.

Answer:

Three Cones, One Cuboid and Two Cylinders

Explanation:

As shown we use 3 cones, 1 cuboid and 2 cylinders

three-dimensional shapes to make up the given structure.

**Apply and Grow: Practice**

Circle the shapes that make up the structure.

Question 5.

Answer:

Four Cubes, One Cuboid and One Cone

Explanation:

As shown we use 4 cubes, 1 cuboid and 1 cone

three-dimensional shapes to make up the given structure.

Question 6.

Answer:

Four Cubes, Two Cuboids and One Cylinder

Explanation:

As shown we use 4 cubes, 2 cuboid and 1 cylinder

three-dimensional shapes to make up the given structure.

Question 7.

Answer:

Three Cubes, Three Cylinders and One Cone

Explanation:

As shown we use 3 cubes, 3 cylinders and 1 cone

three-dimensional shapes to make up the given structure.

Question 8.

Answer:

Three Cubes, Three Cylinders, Three Cones and One Cuboid

Explanation:

As shown we use 3 cubes, 3 cylinders, 3 cones and 1 cuboid

three-dimensional shapes to make up the given structure.

Question 9.

**MP Reasoning**

Which two structures are the same?

Answer:

Structure 1 and structure 3 are the same

Explanation:

Structure 1 has six cubes and structure 3 has three cubes with 1 cuboid

both make the same structure, So Structure 1 and Structure 3 are the same.

**Think and Grow: Modeling Real Life**

How many of each shape make up the gate?

Answer:

6 cubes, 1 rectangular prism, 2 cylinders and 2 cones.

Explanation:

The gate is made up of 6 cubes, 1 rectangular prism,

2 cylinders and 2 cones.

**Show and Grow**

Question 10.

How many of each shape make up the bridge?

Answer:

4 cubes and 7 rectangular prisms

Explanation:

The bridge is made up of 4 cubes and 7 rectangular prisms.

### Take Apart Three-Dimensional Shapes Practice 13.9

Circle the shapes that make up the structure.

Question 1.

Answer:

Three Cubes

Explanation:

As shown we use 3 cubes three-dimensional shape

to make up the given structure.

Question 2.

Answer:

Two Cylinders and Two Cuboids

Explanation:

As shown we use 2 cylinders and 2 cuboids

three-dimensional shapes to make up the given structure.

Question 3.

Answer:

Three Cubes, Two Cylinders and Three Cones

Explanation:

As shown we use 3 cubes , 2 cylinders and 3 cones

three-dimensional shapes to make up the given structure.

Question 4.

Answer:

Two Cubes, One Cylinder, One Cuboid and One Cone

Explanation:

As shown we use 2 cubes , 1 cylinder, 1 Cuboid and 1 cone

three-dimensional shapes to make up the given structure.

Question 5.

**MP Reasoning**

Which two structures are the same?

Answer:

Structure 2 and structure 3 are the same

Explanation:

Structure 2 has six cubes and 1 cuboid and

structure 3 has three cuboids both make the same structure,

So Structure 2 and Structure 3 are the same.

Question 6.

**Modeling Real Life**

How many of each shape make up the castle?

Answer:

6 cubes, 5 rectangular prisms, 8 cylinders and 4 cones.

Explanation:

The gate is made up of 6 cubes, 5 rectangular prisms,

8 cylinders and 4 cones.

**Review & Refresh**

Question 7.

12 + 7 = _____19______

Answer:

12 + 7 = 19

Explanation:

Given expression as 12 + 7 we add we get

result as 19.

Question 8.

42 + 14 = ___56________

Answer:

42 + 14 = 56

Explanation:

Given expression as 42 + 14 we add we get

result as 56.

Question 9.

25 + 32 = _____57______

Answer:

25 + 32 = 57

Explanation:

Given expression as 25 + 32 we add we get

result as 57.

Question 10.

68 + 11 = _____79______

Answer:

68 + 11 = 79

Explanation:

Given expression as 68 + 11 we add we get result as 79.

### Two – and Three – Dimensional Shapes Performance Task

Question 1.

Use the clues to finish the two-dimensional sand castle drawing.

- The flag on the castle is a closed shape with only 3 straight sides.
- The handle of the shovel is a closed shape with L-shaped vertices and 4 sides of the same length.
- The window on the castle is a closed shape with only 6 straight sides.
- The door on the castle is a closed shape with 4 sides that you can use 2 times to make a square.

Answer:

Explanation:

Used the given clues to finish the two-dimensional sand castle drawing.

* The flag on the castle is a closed shape with only 3 straight sides is

triangle,

* The handle of the shovel is a closed shape with L-shaped vertices and

4 sides of the same length is a square,

* The window on the castle is a closed shape with only 6 straight sides

is a hexagon,

* The door on the castle is a closed shape with 4 sides so used

2 times rectangle to make a square.

Question 2.

You are building a sand castle using these three-dimensional shapes.

- 4 shapes that have square flat surfaces
- 5 shapes that have 2 flat surfaces and no vertices
- 3 shapes that have the same number of flat surfaces as vertices

a. Which shape is missing from the sand castle?

Answer:

Hexagon three-dimensional shape is missing from the sand castle.

Explanation:

We can use Hexagon three-dimensional shape as missing from the sand castle. We can use for the windows on the castle as a closed shape

with only 6 straight sides. So hexagon three-dimensional shape is missing from the sand castle.

b. Color a flat surface to show where you would stack the missing shape to

complete the sand castle.

Answer:

Colored hexagon shape.

Explanation:

Colored a flat surface windows to show where I would stack the missing shape hexagon to complete the sand castle.

### Two – and Three – Dimensional Shapes Chapter Practice

### Sort Two-Dimensional Shapes Homework & Practice 13.1

Question 1.

Circle the closed shapes with only 3 straight sides.

Answer:

Explanation:

In the above given figures we have closed shapes

with only 3 straight sides. so I have circled them.

2 are triangles, one triangle with orange color, one right angle triangle

with blue color these are triangles with closed shapes with only 3 straight sides.

Question 2.

**MP Structure**

Draw 2 different two-dimensional shapes that have 1 or more L-shaped vertices.

Answer:

Square and Rectangle

Explanation:

Drawn 2 different two-dimensional shapes one is Square and

other is Rectangle that have 1 or more L-shaped vertices as shown in

the picture above.

### Describe Two-Dimensional Shapes Homework & Practice 13.2

Circle the attributes of the shape.

Question 3.

Answer:

Explanation:

Hexagon has 6 straight sides of the

same length, its closed shape so

circled the attributes of the shape.

Question 4.

Answer:

Explanation:

Rhombus shape has 4 straight sides of the

same length and 4 vertices, so

circled the attributes of the shape.

### Combine Two-Dimensional Shapes Homework & Practice 13.3

Question 5.

Answer:

Explanation:

6 triangles make a hexagon as shown in the figure.

Question 6.

Answer:

Explanation:

3 Triangles make a Trapezoid.

### Create More Shapes Homework & Practice 13.4

Question 7.

Answer:

Explanation:

We can use right angled triangles 4 times to make a Rectangle as

shown in four steps above.

Step 1: Take one right angled triangle place it,

Step 2 : Take one more right angled triangle and place it beside

the first one as shown,

Step 3 : Place one more right angled triangle as shown,

Step 4: Now we place one more right angled triangle

after joining all together makes a Rectangle shape.

Question 8.

Answer:

Explanation:

We can use 2 times of quadrants and 2 squares to make the given

shape as shown in four steps above.

Step 1: Take one quadrants place it,

Step 2 : Take one more quadrants and place it beside

the first one as shown,

Step 3 : Place one square as shown,

Step 4: Now we place one more square beside the previous one

after joining all together makes a required shape as shown.

### Take Apart Two-Dimensional Shapes Homework & Practice 13.5

Draw two lines to show the parts.

Question 9.

1 square and 2 triangles

Answer:

1 square and 2 triangles

Explanation:

Drawn one line in between rectangle

as shown we get 2 squares in one square

we draw one more line as shown we get 2 triangles

we get now 1 square and 2 triangles.

Question 10.

2 triangles and 1 square

Answer:

2 triangles and 1 square

Explanation:

Drawn one line in between trapezoid

as shown we get 1 right angled triangle and

we draw one more line as shown we get 1 more

right angled triangle and center we get a square

we get now 2 right angled triangles and 1 square.

### Sort Three-Dimensional Shapes Homework & Practice 13.6

Question 11.

Circle the shapes with flat surfaces that are all squares.

Answer:

Explanation:

Circled the shapes with flat surfaces that are all squares are

2 cubes and 2 cuboids as shown in the figure above.

Question 12.

**Modeling Real Life**

You need to find an object that has only flat surfaces for a scavenger hunt. Circle the objects you can use.

Answer:

Explanation:

Objects that has only flat surfaces for a scavenger hunt are

Box and Match Box so circled them as shown in the figure above.

### Describe Three-Dimensional Shapes Homework & Practice 13.7

Circle the attributes of the shape.

Question 13.

Answer:

Explanation:

Given Rectangular Prism shape it has 6 flat surfaces,

with 12 edges so circled the attributes of them as shown above.

Question 14.

Answer:

Explanation:

Given Sphere shape it has 0 flat surfaces,

with 0 edges so circled the attributes of them as shown above.

### Combine Three-Dimensional Shapes Homework &

Practice 13.8

Question 15.

Circle the new shape that you can make.

Answer:

Explanation:

Given shapes are 1 cylinder and 1 cube using them we get new shape

as cylinder with cube so circled it as shown in the picture above.

### Take Apart Three-Dimensional Shapes Homework & Practice 13.9

Question 16.

Circle the shapes that make up the structure.

Answer:

Explanation:

As shown we use 6 cubes, 1 cylinder and 2 cuboids three-dimensional shapes to make up the given structure.

*Conclusion:*

Hoping that Big Ideas Math Answers Grade 1 Chapter 13 Two – and Three-Dimensional Shapes has helped you clear your queries. Access the BIM Grade 3 Answer Key Ch 13 for free of cost prepared by math experts. Stay glued to get the Solutions for all Big Ideas Math Grade 1 Chapters.