Angle pairs

Front

What are supplementary angles?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What are complementary angles?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

If 2x and 10x are supplementary, what is the equation to find x?

Back

2x + 10x = 180.

Front

What is the measure of angle A if angle A and angle B are complementary and angle B measures 70 degrees?

Back

Angle A measures 20 degrees.

Front

If angle QRT and angle TRS are supplementary and angle QRT measures 75 degrees, what is the measure of angle TRS?

Back

Angle TRS measures 105 degrees.

Front

What is the value of x if 3x + 27 = 90?

Back

x = 21.

Front

If angle 1 and angle 2 are complementary and angle 1 measures 45 degrees, what is the measure of angle 2?

Back

Angle 2 measures 45 degrees.

Front

What is the relationship between two angles that add up to 180 degrees?

Back

They are supplementary.

Front

What is the relationship between two angles that add up to 90 degrees?

Back

They are complementary.

Front

If angle A measures 30 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle measures 150 degrees.