Refer to our Texas Go Math Grade 2 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 2 Lesson 15.2 Answer Key Sort Three-Dimensional Solids.
Texas Go Math Grade 2 Lesson 15.2 Answer Key Sort Three-Dimensional Solids
Explore
Circle the cones. Draw an X on the sphere.
Answer:
HOME CONNECTION • Your child identified the solids on this page to review some of the different kinds of solids.
Answer:
Math Talk
Mathematical Processes
Name the other solids on this page. Describe how they different.
Answer:
The solids in the page are sphere, cylinder, cone, cube, rectangular prism, and triangular prism. They differ in their shapes.
Sphere has no faces, edges, and vertex
The cylinder has 3 faces, 3 edges, and 0 vertex
Cone has 2 faces, 1 edge, and 1 vertex
Cube has 6 faces, 12 edges, and 8 vertices
The rectangular prism has 6 faces, 12 edges, and 8 vertices
The triangular prism has 5 faces, 9 edges, and 6 vertices
Model and Draw
The faces of a cube are squares.
Answer:
Cube has 6 faces, 12 edges, and 8 vertices
Share and Show
Write how many for each.
Question 1.
rectangular prism
____________ faces
____________ edges
____________ vertices
Answer:
rectangular prism
______6____ faces
______12___ edges
______8___ vertices
Question 2.
cube
____________ faces
____________ edges
____________ vertices
Answer:
cube
______6______ faces
______12_____ edges
_____8_______ vertices
Cubes are a special kind of rectangular prism. Talk about why this is true.
Answer:
The cubes are a special kind of rectangular prisms. Yes, it’s true. The cubes are a different kind of rectangular prism as they have the same number of faces, edges, and vertices. There is a small difference in that the cube has equal size throughout whereas rectangular prisms have different sizes of faces.
The length and breadth of the cube are equal on all sides, whereas they differ for the rectangular prism.
Problem Solving
Write how many for each.
Question 3.
triangular prism
____________ faces
____________ edges
____________ vertices
Answer:
triangular prism
____5______ faces
_____9_____edges
______6____ vertices
Solve. Write or draw to explain.
Question 4.
H.O.T. Multi-Step Two of the six faces of a solid are shown. Draw the rest of the faces.
What is the name of the solid?
Answer:
Rectangular prism
Explanation:
The faces shown above belong to a rectangular prism.
Question 5.
H.O.T. Look at the faces of the cube and the faces of the rectangular prism. Are they different? Explain.
Answer:
Yes
Explanation:
Though the number of faces on the cube and rectangular prisms are same. The sizes of the faces i.e, the length and breadth of the rectangular prism differ from the cube.
Daily Assessment Task
Write the shape names to complete.
Question 6.
Decide which labels are true for each solid. Then write the names of those solids.
Has exactly 6 faces
Has exactly 6 vertices
Has exactly 12 edges
Answer:
Cube and Rectangular prism has 6 faces.
A triangular prism has 6 vertices.
Cube, rectangular prism, pentagonal prism, Hexagonal pyramid has 12 edges.
Question 7.
Texas Test Prep How many faces does a triangular prism have?
(A) 5
(B) 9
(C) 6
Answer:
5
TAKE HOME ACTIVITY • Have your child tell you about the faces on a cereal box or another kind of box.
Answer:
6
Explanation:
The cereal box or any kind of box consists of 6 faces, irrespective of size and shape.
Texas Go Math Grade 2 Lesson 15.2 Homework and Practice Answer Key
Write how many for each.
Question 1.
rectangular prism
____________ faces
____________ edges
____________ vertices
Answer:
rectangular prism
______6____ faces
______12___ edges
______8___ vertices
Question 2.
triangular prism
____________ faces
____________ edges
____________ vertices
Answer:
____5______ faces
____9_____edges
_____6___ vertices
Problem Solving
Question 3.
Multi-Step Three of the six faces of a solid are shown. Draw the rest of the faces.
What is the name of the solid?
Answer:
Cube
Explanation:
As the three faces of the solid are of the same size, the solid is cube.
Lesson Check
Choose the correct answer.
Question 4.
How many faces does a triangular prism have?
(A) 9
(B) 6
(C) 5
Answer:
5 faces
Question 5.
Gina’s cereal box has 6 faces, 12 edges, and 8 vertices. Which is the name of the shape of her cereal box?
(A) cylinder
(B) rectangular prism
(C) triangular prism
Answer:
Rectangular prism
Question 6.
Dave gives his brother a toy car in a box that is a rectangular prism with 6 square faces. Which is another name for this rectangular prism?
(A) cube
(B) cone
(C) triangular prism
Answer:
Cube
Question 7.
Julie bought a wedge of cheese. The cheese is inside a box that has 2 triangular faces and 3 rectangular faces. Which is the name for the shape of the box?
(A) a cone
(B) a triangular prism
(C) a rectangular prism
Answer:
a rectangular prism