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 one angle is 30 degrees, what is the measure of its complementary angle?

Back

60 degrees.

Front

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

Back

60 degrees.

Front

What do you call angles that are next to each other and share a common side?

Back

Adjacent angles.

Front

If two angles are supplementary and one angle measures 90 degrees, what is the measure of the other angle?

Back

90 degrees.

Front

Are two angles that measure 45 degrees each complementary or supplementary?

Back

Complementary.

Front

What is the sum of the measures of two complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.

Front

If angle A is 40 degrees, what is the measure of angle B if they are complementary?

Back

50 degrees.