Vertical, Complementary and Supplementary Angles Practice 1-2

Front

What are vertical angles?

Back

Vertical angles are pairs of opposite angles formed when two lines intersect. They are always congruent (equal in measure).

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the supplement of an angle?

Back

The supplement of an angle is what, when added to the angle, equals 180 degrees.

Front

If one angle measures 160 degrees, what is its supplement?

Back

The supplement of a 160-degree angle is 20 degrees.

Front

What are complementary angles?

Back

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

Front

If one angle measures 30 degrees, what is its complement?

Back

The complement of a 30-degree angle is 60 degrees.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

Are adjacent angles always supplementary?

Back

No, adjacent angles are not always supplementary; they can be complementary or neither.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (equal in measure).

Front

If angle 1 is 40 degrees, what is the measure of angle 2 if they are vertical angles?

Back

Angle 2 also measures 40 degrees.