Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 15.3 Answer Key More Three-Dimensional Solids.

## Texas Go Math Grade 1 Lesson 15.3 Answer Key More Three-Dimensional Solids

**Explore**

Draw to sort the three-dimensional solids.

Answer:

FOR THE TEACHER • Have children sort the three-dimensional solids into two groups. Have them draw around each group to show how they sorted.

Answer:

**Math Talk**

**Mathematical Processes**

Explain how you sorted the solids.

Answer:

Sorted the solids by differentiating the 3-dimensional objects with 1 flat surface and 2 flat surfaces.

**Model and Draw**

Look at the faces, the vertices, and the edges of these solids.

THINK

A face is a flat surface of a solid.

An edge is where 2 faces meet.

A vertex is where 3 or more edges meet.

**Share and Show**

**Use rectangular prisms, cubes, and triangular prisms. Sort the solids into groups. Name and draw the solids.**

Question 1.

6 faces

Answer: Cube

Question 2.

5 faces

Answer: Triangular Prism

Question 3.

9 edges

Answer: Triangular Prism

Question 4.

8 vertices

Answer: Rectangular Prism

**Problem Solving**

**Use three-dimensional solids. Write how many.**

Question 5.

__________ faces

__________ edges

__________ vertices

Answer: Cube

Question 6.

__________ faces

__________ edges

__________ vertices

Answer: Triangular Prism

Question 7.

__________ faces

__________ edges

__________ vertices

Answer: Cuboid

Question 8.

**H.O.T.** How many faces of a cube are squares?

__________ faces

Answer: Six faces

Explanation:

A cube is a 3- dimensional solid object bounded by six square faces.

Question 9.

**H.O.T. Multi-Step** Which solid has some faces that are triangles and some faces that are rectangles? Explain.

Answer: Triangular Prism

Explanation:

A triangular prism has 5 faces in which 2 are triangular faces and 3 are rectangular faces.

**Daily Assessment Task**

**Choose the correct answer.**

Question 10.

Representations Terri uses this block to build a house. What ¡s the solid?

(A) cube

(B) rectangular prism

(C) cylinder

Answer:

Rectangular Prism

Explanation:

A rectangular prism has rectangular faces

Question 11.

Johnny builds a birdhouse. It has 6 faces. The faces are all squares that are the same size. Which shows the shape of Johnny’s birdhouse?

Answer:

Question 12.

**Multi-Step** Louis builds an object with only triangles and rectangles. Which object does he build?

Answer:

Question 13.

**Texas Test Prep** Which solid has 5 faces?

Answer:

Explanation:

A triangular prism has 5 faces in which 2 of them are triangular faces and 3 of them are rectangular faces.

**HOME CONNECTION** • Ask your child to name red objects shaped like a rectangular prism, a cube, and a triangular prism.

Answer:

Rectangular prism – red colored domino,

Cube – red rubiks cube,

Triagular prism – red colored camping tent.

### Texas Go Math Grade 1 Lesson 15.3 Homework and Practice Answer Key

**Name and draw a solid to match.**

Question 1.

5 faces

Answer: Triangular Prism

Question 2.

8 vertices

Answer: Rectangular prism

**Problem Solving**

Question 3.

How many faces of a triangular prism are rectangles?

__________ faces

Answer: 3 faces

Explanation:

A triangular prism has a total of 5 faces in which 2 of them are triangular faces and 3 of them are rectangular faces.

Question 4.

How many faces of a triangular prism are rectangles?

_________ faces

Answer: 3 faces

Explanation:

A triangular prism has a total of 5 faces in which 2 of them are triangular faces and 3 of them are rectangular faces.

Question 5.

How many faces of a triangular prism are triangles?

__________ faces

Answer:

Explanation:

A triangular prism has a total of 5 faces in which 2 of them are triangular faces and 3 of them are rectangular faces.

**Lesson Check**

**Choose the correct answer.**

Question 6.

Sam finds a small cube. He counts the vertices How many does he count?

(A) 5

(B) 6

(C) 8

Answer: A cube has 8 vertices, Sam counts 8 vertices in a cube.

Question 7.

Jackie chooses a triangular prism. She counts the edges. How many edges does she count?

(A) 9

(B) 12

(C) 6

Answer: A triangular prism has 9 edges, Jackie counts 9 edges in a triangular prism.

Question 8.

**Multi-Step** How many more vertices does a cube have than a triangular prism?

(A) 1

(B) 2

(C) 8

Answer: A cube has 8 vertices and a triangular prism has 6 vertices.

Question 9.

Which solid has 9 edges?

Answer: A triangular prism has 9 edges.