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 equation to find the measure of a missing angle if it is complementary to 42 degrees?

Back

x + 42 = 90.

Front

What is the equation to find the measure of a missing angle if it is supplementary to 42 degrees?

Back

x + 42 = 180.

Front

If angle A is 45 degrees, what is the measure of angle B if they are complementary?

Back

Angle B is 45 degrees.

Front

If angle C is 75 degrees, what is the measure of angle D if they are supplementary?

Back

Angle D is 105 degrees.

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.