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 one angle is 30°, what is its complementary angle?

Back

60°.

Front

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

Back

60°.

Front

What is the sum of two complementary angles?

Back

90°.

Front

What is the sum of two supplementary angles?

Back

180°.

Front

If two angles are supplementary and one angle is 90°, what is the other angle?

Back

90°.

Front

Are adjacent angles always supplementary?

Back

No, adjacent angles can be complementary or neither.

Front

If angle A is 45°, what is the measure of its complementary angle?

Back

45°.

Front

If angle B is 75°, what is the measure of its supplementary angle?

Back

105°.