Complementary/Supplementary/Vertical 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

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always congruent.

Front

If one angle measures 72 degrees, what is the measure of its complementary angle?

Back

18 degrees.

Front

If two angles are supplementary and one measures 102 degrees, what is the measure of the other angle?

Back

78 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal in measure.

Front

If angle A is 19 degrees, what is the measure of its supplementary angle?

Back

161 degrees.

Front

If two angles are adjacent and one measures 45 degrees, what is the measure of the other angle if they are supplementary?

Back

135 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.