# 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 ​​​​ of a full turn of a ray through a circle.

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)

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

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

## Problem 2 (Lesson 7)

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

2. 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 .

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

2. 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 angles can you make using your ray and another ray? Explain your reasoning and make the angles.

## Problem 7 (Exploration)

What is the smallest angle you can draw?

1. Can you draw a angle?

2. What about a angle or a angle?

3. What is difficult about drawing a small angle?