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 is 30°, what is the measure of its complementary angle?

Back

60°

Front

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

Back

60°

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

Are 45° and 45° complementary or supplementary?

Back

Complementary.

Front

Are 100° and 80° complementary or supplementary?

Back

Supplementary.

Front

Find the missing angle if one angle is 43° and they are complementary.

Back

47°

Front

Find the missing angle if one angle is 70° and they are supplementary.

Back

110°.