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 sum of complementary angles?

Back

90 degrees.

Front

What is the sum of supplementary angles?

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 two angles that measure 90 degrees complementary or supplementary?

Back

They are supplementary.

Front

What is an example of a pair of complementary angles?

Back

81° and 9°.

Front

What is an example of a pair of supplementary angles?

Back

110° and 70°.

Front

If two angles are complementary, what is the relationship between their measures?

Back

Their measures add up to 90 degrees.