Complementary and Supplementary Angles

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

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 complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees.

Front

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

Back

50 degrees.

Front

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

Back

70 degrees.

Front

Find the missing angle if one angle is 76 degrees and they are complementary.

Back

14 degrees.

Front

Find the missing angle if one angle is 89 degrees and they are supplementary.

Back

91 degrees.