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 a right angle?

Back

90 degrees.

Front

What is the measure of a straight angle?

Back

180 degrees.

Front

If one angle is 30 degrees, what is its complementary angle?

Back

60 degrees.

Front

If one angle is 120 degrees, what is its supplementary angle?

Back

60 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 45° and they are complementary.

Back

45°.

Front

Find the missing angle if one angle is 110° and they are supplementary.

Back

70°.