We included **HMH Into Math Grade 2 Answer Key PDF** **Module 21 Lesson 4 Sort Two-Dimensional Shapes by Sides and Angles **to make students experts in learning maths.

## HMH Into Math Grade 2 Module 21 Lesson 4 Answer Key Sort Two-Dimensional Shapes by Sides and Angles

I Can compare two-dimensional shapes by the number of sides and angles.

**Spark Your Learning**

How can you show Fiona’s shapes.

Read the following: Fiona wants to draw four shapes. Each shape has a different number of sides and angles. V4,at shapes can she draw? Have partners compare their work.

Answer:

**Build Understanding**

Question 1.

Graham is sorting shapes. He wants to draw shapes with fewer than 5 sides. What shapes does Graham draw?

A. Draw shapes with fewer than 5 sides.

Answer:

The shapes that are fewer than 5 sides are

Rectangle

Square

Triangle

Pentagon

Hexagon

B. Look at your drawings. Name each shape and write the number of sides.

pentagon

quadrilateral

triangle

shape: _________ _______ sides

shape: _________ _______ sides

Answer:

Hexagon has six sides

Pentagon has five sides

Quadrilateral has four sides

Triangle has three sides

C. What is alike about these shapes?

Answer: Rectangle and square are like with the same number of sides.

**Turn and Talk** Is it possible to draw a shape with 7 angles? How many sides would it have? Explain.

Answer: Yes we can a shape with 7 angles that is known as heptagon.

**Step It Out**

Question 1.

Tonya is sorting shapes. She wants to find shapes with more than 4 angles. Which shapes match the rule?

A. List the number of sides for each shape.

triangle __________ sides

quadrilateral __________ sides

pentagon __________ sides

hexagon __________ sides

Answer:

triangle – 3 sides

quadrilateral – 4 sides

pentagon – 5 sides

hexagon – 6 sides

B. List the shapes with more than 4 sides.

Answer: The name of the shapes with more than 4 sides is pentagon and hexagon.

C. List the shapes with more than 4 angles.

Answer: The name of the shapes with more than 4 angles is pentagon and hexagon.

**Check Understanding**

**List the shapes that match the rule.**

hexagon

pentagon

quadrilateral

triangle

Question 1.

Shapes with more than 3 angles

Answer: Shapes with more than 3 angles is quadrilateral, pentagon, and hexagon.

Question 2.

Shapes with fewer than 6 sides

Answer: Shapes with fewer than 6 sides is the triangle, quadrilateral, and pentagon.

Question 3.

Shapes with more than 5 sides

Answer: The shape with more than 5 sides is the hexagon.

**On Your Own**

**Use Repeated Reasoning** Frances writes these rules. Draw two shapes that match each rule.

Question 4.

Shapes with fewer than 5 angles

Answer: Shapes with fewer than 5 angles are the triangle, quadrilateral, and pentagon.

Question 5.

Shapes with more than 3 sides

Answer: Shapes with more than 3 sides are quadrilateral, pentagon, and hexagon.

**Attend to Precision** Circle the shapes that match the rule.

Question 6.

Shapes with fewer than 6 angles

Answer:

The list of the shapes with fewer than 6 angles are square, pentagon and triangle.

Question 7.

Shapes with more than 4 angles

Answer:

The list of shapes with more than 4 angles is pentagon and hexagon.

**I’m in a Learning Mindset!**

How do I help my partner understand how to sort two-dimensional shapes by sides and angles?

Answer: You can sort two-dimensional shapes by sides and angles by counting the number of sides and angles shown in the image.