All the solutions provided inÂ **McGraw Hill My Math Grade 2 Answer Key PDF Chapter 12 Lesson 3 Problem Solving Strategy: Draw a Diagram **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 12 Lesson 3 Problem Solving Strategy: Draw a Diagram

Lyla drew a shape. The shape has 6 sides. It also has 6 angles. What shape did Lyla draw?

1. Understand

Underline what you know. Circle what you need to find.

2. Plan

How will I solve the problem?

3. Solve

Draw a diagram.

Lyla drew a ______________.

4. Check

Is my answer reasonable? Explain.

Answer:

Lyla drew a hexagon

It is reasonable because a hexagon has 6 sides and 6 angles

**Practice the Strategy**

Marcy drew a shape. It has 5 sides. It has 5 angles. What shape did she draw?

1. Understand

Underline what you know. Circle what you need to find.

2. Plan

How will I solve the problem?

3. Solve

I will…

Marcy drew a ____________.

4. Check

Is my answer reasonable? Explain.

Answer:

Marcy drew a Pentagon

His answer is reasonable because a pentagon has 5 sides and 5 angles.

**Apply the Strategy**

Question 1.

If a shape has 3 sides and 3 angles, what shape is it? Draw the shape.

Answer:

Explanation:

A triangle has 3 sides and 3 angles

Question 2.

Abby draws a triangle. Samuel draws a shape that has 1 more side than a triangle. What shape did Samuel draw? Draw the shape.

Answer:

Square

Explanation:

Samuel draws a shape that has 1 more side than a triangle.

A square has 4 sides and 4 angles that is one more side than triangle.

so, SamuelÂ draw a square

Question 3.

Jason drew a shape that has more sides than a triangle or rectangle but less angles than a hexagon. What shape did he draw? Draw the shape.

Answer:

Explanation:

A pentagon has more sides than a square and a triangle,

but less than a hexagon.

so, Jason drew aÂ pentagon

**Review the Strategies**

Choose a strategy

- Write a number sentence.
- Draw a diagram.
- Use logical reasoning.

Question 4.

Tammy saw a two-dimensional shape. The shape has 6 sides and 6 angles. Two of the sides are longer than the others. What shape did Tammy see?

Answer:

Irregular Hexagon

Explanation:

In a regular hexagon 6 sides will be equal

but in a irregular hexagon the sides will be different sizes.

Question 5.

The sign at the end of Davidâ€™s street is a two-dimensional shape. It has 4 sides and 4 angles. The sides are all the same length. What shape is the sign?

Answer:

Rhombus

Explanation:

A rhombus has 4 sides and 4 angles

All the sides are equal in length.

so, the sign that David saw was A Rhombus.

Question 6.

Jason was drawing shapes with sidewalk chalk in the park. He drew 3 triangles and then 2 squares. How many angles did he draw?

______________ angles

Answer:

17 angles

Explanation:

Jason was drawing shapesÂ in the park.

He drew 3 triangles and then 2 squares.

3 triangles = 3 x 3 = 9 angles

A triangle has 3 sides and 3 angles

2 squares = 2 x 4 = 8 angles

A square has 4 sides and 4 angles

9 + 8 = 17 angles

### McGraw Hill My Math Grade 2 Chapter 12 Lesson 3 My Homework Answer Key

**Underline what you know. Circle what you need to find. Draw a diagram to solve.**

Question 1.

Maggie drew a house. She drew a square for the bottom. She drew a triangle on top of the square for the roof. Trace the outside of the house. What shape is Maggieâ€™s house? Draw it.

Answer:

Pentagon

Explanation:

The out line of the house looks like a Pentagon,

That is irregular the lengths of the sides will be in different length

Question 2.

Billy saw a sign while walking through the park. The sign had no sides and no angles. What shape is the sign?

Answer:

Circle

Explanation:

Billy saw a sign while walking through the park.

so, the shape must be a circle because a circle has 0 sides and 0 angles.

Question 3.

London painted a shape that had 4 sides. The shape had 4 angles. What kind of shape did he paint?

Answer:

Square

Explanation:

London painted a shape that had 4 sides. The shape had 4 angles.

The shape might be a square as square has 4 sides and 4 angles.

**Math at Home**

Describe a shape to your child. Have him or her draw the shape you described and identify the shape.

Answer: