Measuring Angles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the unit of measurement for angles?

Back

Angles are measured in degrees.

Front

What is a right angle?

Back

A right angle measures 90 degrees.

Front

What is a straight angle?

Back

A straight angle measures 180 degrees.

Front

What is a full angle?

Back

A full angle measures 360 degrees.

Front

How many degrees are in a half circle?

Back

A half circle measures 180 degrees.

Front

If a pie is cut into 10 equal slices, what is the measure of each slice?

Back

Each slice measures 36 degrees.

Front

What is the measure of the angle formed by 3 slices of a pie cut into 10 equal slices?

Back

The angle formed by 3 slices is 108 degrees.

Front

What is a complementary angle?

Back

Complementary angles are two angles that add up to 90 degrees.

Front

What is a supplementary angle?

Back

Supplementary angles are two angles that add up to 180 degrees.