Complementary, Supplementary, and 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 and angle B are complementary and angle A is 30 degrees, what is angle B?

Back

Angle B is 60 degrees.

Front

If angle C and angle D are supplementary and angle C is 130 degrees, what is angle D?

Back

Angle D is 50 degrees.

Front

If two angles are vertical and one angle measures 40 degrees, what is the measure of the other angle?

Back

The other angle also measures 40 degrees.

Front

Find x if angle 1 and angle 2 are complementary and angle 1 is 53 degrees.

Back

x = 37 degrees.

Front

Find x if angle 3 and angle 4 are supplementary and angle 3 is 32 degrees.

Back

x = 148 degrees.

Front

If angle NOQ is 31 degrees, what is the measure of its vertical angle?

Back

The vertical angle is also 31 degrees.

Front

If angle AOC is 50 degrees, what is the measure of its complementary angle?

Back

The complementary angle is 40 degrees.