Complementary and Supplementary Angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the measure of an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is the measure of an obtuse angle?

Back

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

Front

If one angle measures 30 degrees, what is the measure of its complementary angle?

Back

60 degrees.

Front

If one angle measures 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees.

Front

What is the sum of the measures of two complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.

Front

If two angles are complementary, and one angle measures 40 degrees, what is the measure of the other angle?

Back

50 degrees.

Front

If two angles are supplementary, and one angle measures 110 degrees, what is the measure of the other angle?

Back

70 degrees.