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 equal.

Front

If angle A is 37 degrees, what is the measure of its complementary angle?

Back

53 degrees (90 - 37 = 53).

Front

If angle B is 144 degrees, what is the measure of its supplementary angle?

Back

36 degrees (180 - 144 = 36).

Front

If angle C is 95 degrees, what is the measure of its complementary angle?

Back

Not applicable, as complementary angles must add up to 90 degrees.

Front

True or False: Two angles that add up to 180 degrees are called complementary angles.

Back

False; they are called supplementary angles.

Front

True or False: Vertical angles are always equal.

Back

True.

Front

If angle 1 and angle 2 are supplementary and angle 1 measures 80 degrees, what is the measure of angle 2?

Back

100 degrees (180 - 80 = 100).

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal.