Arc and Angle Measures

Front

A ____ angle is an angle whose vertex is at the center of a circle.

Back

central

Front

How many degrees are in a circle?

Back

360 degrees

Front

Determine the value of x if the angle measures 68º.

Back

68º

Front

Determine the value of x if the angle measures 45º.

Back

45º

Front

Determine the value of x if the angle measures 124º.

Back

124º

Front

What is the term for angles that add up to 180 degrees?

Back

supplementary angles

Front

What is the term for angles that add up to 90 degrees?

Back

complementary angles

Front

What is the measure of a right angle?

Back

90 degrees

Front

What is the relationship between the central angle and the arc it intercepts?

Back

The central angle is equal to the measure of the arc it intercepts.

Front

If two angles are vertical angles, what can be said about their measures?

Back

Vertical angles are equal.