Angles and Circles

Angles and Circles

Finding angle measurements without using a protractor.

Let's Review

• Angles can be measured in units called degrees ( ° ).

• When you  find the degrees of an angle, you find its angle measure.

Multiple Choice

A right angle measures ____ degrees.

• 90

• 45

• 180

• 120

Multiple Choice

What is the measure of a straight line?

• 90

• 45

• 180

• 120

Multiple Choice

A circular cookie cake is

cut into 6 pieces of the same size. What is the angle measure of each piece?

• 180°

• 360°

• 90°

• 60°

Multiple Choice

What is the measure of the shaded part?

• 360°

• 180°

• 120°

• 0°

Multiple Choice

A circle is divided into 9 equal parts. What is the angle measure of one of those parts?

• 40°

• 9°

• 360°

• 90°

Multiple Choice

What is the measure of the angle created

when the clock shows 3:00?

• 45°

• 180°

• 75°

• 90°

Multiple Choice

How many 10° angles are there in a circle?

• 18

• 36

• 24

• 48

Multiple Choice

How many 90° angles are there in a circle?

• 1

• 6

• 4

• 8