# Into Math Grade 2 Module 21 Lesson 1 Answer Key Identify and Draw Three-Dimensional Shapes

We included HMH Into Math Grade 2 Answer Key PDF Module 21 Lesson 1 Identify and Draw Three-Dimensional Shapes to make students experts in learning maths.

## HMH Into Math Grade 2 Module 21 Lesson 1 Answer Key Identify and Draw Three-Dimensional Shapes

I Can describe and compare the attributes of three-dimensional shapes.

How can you show the shapes Sara could put in her collection? Read the following. Sara wants to make a collection of items shaped like cubes and rectangular prisms for a school project. Look around the room. What items could Sara include in her collection?
Cube: Rectangular Prism: Build Understanding

Question 1.
Anah is writing clues for a three-dimensional shape guessing game. What clue could he write for a cube?
Circle
square
triangle

A. How can you describe a cube by its faces?
A cube has _________ faces.
Every face is shaped like a _________.
A cube has six faces.
Every face is shaped like a square.
Explanation:
A cube is a three-dimensional solid object bounded by six square faces, facets, or sides, with three meeting at each vertex. The lengths of the cube are the same.

Connect to Vocabulary Each flat surface of a three-dimensional shape is a face.
An edge is where two faces of a three- dimensional shape meet.
The vertices are the corner points of a three-dimensional shape. Each corner point is called a vertex.

B. What are some other ways to describe a cube?
A cube has _________ edges and __________ vertices.
Answer: A cube has 12 edges and 8 vertices.

C. Write Anah’s clue.

D. Anah traces the faces of a cube. Circle the group of shapes that show what Anah traces.  A cube is a three-dimensional figure with six square faces.

Turn and Talk Which objects in your classroom are shaped like cubes?

Question 2.
Milena is also writing clues for a three-dimensional shape guessing game. What clue could she write for a rectangular prism? circle
rectangle
square

A. How can you describe a rectangular prism by its faces?
A rectangular prism has ________ faces.
Its faces are shaped like ___________.
A rectangular prism has six faces.
Its faces are shaped like rectangles.
Explanation:
In geometry, a rectangular prism can be defined as a 3-dimensional solid shape that has six faces that are rectangles.

B. What are some other ways to describe a rectangular prism?
A rectangular prism has ________ edges and _________ vertices.
Answer: A rectangular prism has 12 edges and 8 vertices.

C. Write Milena’s clue.
Answer: The clue of Milena is a rectangle.

D. Which objects in your classroom are shaped like rectangular prisms?
Answer: Books and Board are objects that look like rectangular prism.

Turn and Talk How are cubes and rectangular prisms alike? How are they different?
Answer: A cube is a rectangular prism with all sides equal, and therefore all faces of equal area. A rectangular prism will have four faces of equal area and two faces of equal area. So a cube is a rectangular prism, but not all rectangular prisms are cubes.

Build Understanding

Use the directions to draw a cube.

A. Draw a square. Make each side 4 units long.  B. Draw edges from 3 vertices, like this.  C. Draw 2 more edges.  D. Draw 3 dashed edges to show the faces that are not seen.  Check Understanding

cube
rectangular prism

Question 1.
Mackenzie has a three-dimensional shape with 6 faces, 12 edges, and 8 vertices. The faces are all shaped like squares. What shape does she have?
Given data,
Mackenzie has a three-dimensional shape with 6 faces, 12 edges, and 8 vertices.
The faces are all shaped like squares.
A cube is a shape that has 6 faces, 12 edges, and 8 vertices.
Thus the name of the shape is a cube.

Question 2.
Sammy has a three-dimensional shape with 6 faces, 12 edges, and 8 vertices. The faces are shaped like rectangles. What shape does he have?
Given,
Sammy has a three-dimensional shape with 6 faces, 12 edges, and 8 vertices.
The faces are shaped like rectangles.
The name of the shape is a rectangular prism.

Question 3.
Construct Arguments Sahil is not sure if he is holding a rectangular prism or a cube. How can he decide which shape he has? Explain.
If he is holding a square type shape then the name of the shape is a cube.
If he is holding a rectangle type shape then the name of the shape is a rectangular prism.

Question 4.
Use Repeated Reasoning How many faces, edges, and vertices does a rectangular prism have?
________ faces
________ edges
________ vertices
A rectangular prism has
6 faces
12 edges
8 vertices

Question 5.
Use the word bank to label the parts of the rectangular prism.
edge
face
vertex The parts of the rectangular prism are
1. Face
2. Edge
3. Vertex

Question 6.
Attend to Precision Trace all the faces of a cube on a sheet of paper. Describe the shapes.

Question 7.
Marissa wants to put a picture on each face of a memory cube. How many pictures will she need? __________ pictures
Given,
Marissa wants to put a picture on each face of a memory cube.
A cube has 6 faces.
Thus she need 6 pictures.

circle
square
triangle

Question 8.
What shape will she put the pictures on?

Question 9.
How many faces does this shape have? ________ faces
The name of the shape is a rectangular prism.
A rectangular prism has 6 faces.

Question 10.
Attend to Precision How many edges and vertices does this shape have? ________ edges
________ vertices