Angle pairs

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

If two angles are equal and complementary, what is the measure of each angle?

Back

Each angle measures 45 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent, meaning they have equal measures.

Front

If one angle measures 115 degrees, what is the measure of its adjacent angle if they are supplementary?

Back

The adjacent angle measures 65 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If angle 1 measures 70 degrees, what is the measure of angle 2 if they are complementary?

Back

Angle 2 measures 20 degrees.

Front

What is the measure of an angle that is vertical to angle 2 if angle 2 measures 30 degrees?

Back

The vertical angle to angle 2 also measures 30 degrees.

Front

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

Back

The sum is always 90 degrees.

Front

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

Back

The sum is always 180 degrees.

Front

If angle A and angle B are complementary and angle A measures 40 degrees, what is the measure of angle B?

Back

Angle B measures 50 degrees.