Complementary and Supplementary Angles

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

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

Back

90°.

Front

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

Back

180°.

Front

What is the relationship between complementary angles?

Back

They are two angles whose measures add up to 90°.

Front

What is the relationship between supplementary angles?

Back

They are two angles whose measures add up to 180°.

Front

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

Back

60°.

Front

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

Back

60°.

Front

Find the missing angle if one angle is 40° and they are complementary.

Back

50°.

Front

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

Back

70°.