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 (equal in measure).

Front

If one angle is 42°, what is its supplement?

Back

138°

Front

If one angle is 64°, what is its supplement?

Back

116°.

Front

What is the equation to find the supplement of an angle x?

Back

x + y = 180, where y is the supplement.

Front

If two angles are supplementary and one angle is 100°, what is the other angle?

Back

80°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (equal in measure).

Front

If angle A is 32° and angle B is its supplement, what is angle B?

Back

148°.

Front

What is the sum of the measures of complementary angles?

Back

90 degrees.