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 two angles are complementary, what is the sum of their measures?

Back

The sum of their measures is 90 degrees.

Front

If two angles are supplementary, what is the sum of their measures?

Back

The sum of their measures is 180 degrees.

Front

What is an example of a pair of complementary angles?

Back

36° and 54°.

Front

What is an example of a pair of supplementary angles?

Back

150° and 30°.

Front

If ∠A and ∠B are supplementary and ∠A measures 70°, what is the measure of ∠B?

Back

∠B measures 110°.

Front

If ∠C and ∠D are complementary and ∠C measures 25°, what is the measure of ∠D?

Back

∠D measures 65°.

Front

Are 45° and 45° complementary or supplementary?

Back

They are complementary.

Front

Are 90° and 90° complementary or supplementary?

Back

They are neither.