We included HMH Into Math Grade 2 Answer Key PDF Module 21 Review to make students experts in learning maths.

Vocabulary

Use the words to label the parts of the shape.

Vocabulary
angle
edge
face
side
vertex  The arrows in the above picture shows the name of the shape.
Face
Edge
Vertex
Side
Angle

Use the words to write the name for each shape.

Vocabulary
hexagon
pentagon

Question 6. The above shape has four sides.
So, the name of the shape is quadrilateral.

Question 7. The above shape has five sides.
So, the name of the shape is a pentagon.

Question 8. The above shape has six sides.
So, the name of the shape is a hexagon.

Concepts and Skills

Fill in the bubble next to the correct answer.

Question 9.
How many edges are there in a cube?
(A) 4
(B) 8
(C) 12
A cube has 12 edges.
Option C is the correct answer.

Question 10.
How many vertices are there in a hexagon?
(A) 4
(B) 5
(C) 6
A hexagon has 6 vertices.
Option C is the correct answer.

Question 11.
How many sides are there in a pentagon?
(A) 4
(B) 5
(C) 6
A pentagon is a regular polygon with five sides.
Option B is the correct answer.

Question 12.
Which shapes have more than 4 angles?
(A) rectangle
(B) triangle
(C) hexagon
(D) pentagon
(C) hexagon
(D) pentagon
Hexagon and Pentagon have more than 4 angles.
Hence options C and D are the correct answers.

Question 13.
Which shapes have fewer than 5 sides?