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

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

Back

60 degrees.

Front

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

Back

60 degrees.

Front

What is the sum of complementary angles?

Back

90 degrees.

Front

What is the sum of supplementary angles?

Back

180 degrees.

Front

Are two angles that measure 45 degrees complementary, supplementary, or neither?

Back

Complementary.

Front

Are two angles that measure 100 degrees and 80 degrees complementary, supplementary, or neither?

Back

Supplementary.

Front

If angle A is 70 degrees, what is the measure of angle B if they are complementary?

Back

20 degrees.

Front

If angle C is 40 degrees, what is the measure of angle D if they are supplementary?

Back

140 degrees.