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

## HMH Into Math Grade 2 Module 21 Review Answer Key

**Vocabulary**

**Use the words to label the parts of the shape.**

Vocabulary

angle

edge

face

side

vertex

Answer:

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

quadrilateral

Question 6.

Answer:

The above shape has four sides.

So, the name of the shape is quadrilateral.

Question 7.

Answer:

The above shape has five sides.

So, the name of the shape is a pentagon.

Question 8.

Answer:

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

Answer: (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

Answer: (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

Answer: (B) 5

A pentagon is a regular polygon with five sides.

Option B is the correct answer.

**Choose the two correct answers.**

Question 12.

Which shapes have more than 4 angles?

(A) rectangle

(B) triangle

(C) hexagon

(D) pentagon

Answer:

(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?

(A) quadrilateral

(B) triangle

(C) hexagon

(D) pentagon

Answer:

The shapes that have fewer than 5 sides are quadrilateral, triangles.

Hence options A and B are the correct answers.