# Section B: Practice Problems The Size of Angles

## Section Summary

## Details

In this section, we learned about ways to describe and measure the size of angles.

We used clocks to describe angles as a turn of one away from the other. We learned that a degree is a measure of the turn around a circle and that 1 degree is

Finally, we learned that a **protractor** is a tool used to measure angles and can also be used to create angles of a certain measure.

A protractor has two sets of numbers and that either set of numbers could be used, but it is helpful to use the set that counts up from 0 rather than count down from 180. We used a protractor to measure and draw different angles.

## Problem 1 (Lesson 6)

Write two statements that compare the size of angles A and B.

Draw an angle C that is bigger than both angle A and angle B.

## Problem 2 (Lesson 7)

Which set of clock hands make a greater angle? Explain how you know.

Choose one of the clocks and describe how to use the clock to draw the angle represented by the hands on the clock.

## Problem 3 (Lesson 8)

This angle has a measure of

How many of these angles can you put together, without overlaps, to make a complete circle? Explain or show how you know.

Explain how you can use the given angle to sketch a

angle.

## Problem 4 (Lesson 9)

Use the given protractor to find the measurement of each angle.

## Problem 5 (Lesson 10)

Which of these shapes have segments that are perpendicular to one another? Trace or circle the perpendicular segments.

## Problem 6 (Lesson 11)

Draw a ray. How many different

## Problem 7 (Exploration)

What is the smallest angle you can draw?

Can you draw a

angle? What about a

angle or a angle? What is difficult about drawing a small angle?

## Problem 8 (Exploration)

What are the measurements of the angles on the pentagon?

Connect every pair of vertices of the pentagon with a line segment. What do you notice? What do you wonder?

## Problem 9 (Exploration)

**Exploration**

Can you estimate or find the measurement of the angle labeled