Naming and Classifying Angles

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

How do you classify an angle that measures 45 degrees?

Back

An angle that measures 45 degrees is classified as an acute angle.

Front

How do you classify an angle that measures 120 degrees?

Back

An angle that measures 120 degrees is classified as an obtuse angle.

Front

What is the measurement of a right angle?

Back

The measurement of a right angle is 90 degrees.

Front

What is the measurement of a straight angle?

Back

The measurement of a straight angle is 180 degrees.