Segment and Angle Proofs

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the Definition of Supplementary Angles?

Back

If two angles are supplementary, their sum is 180 degrees.

Front

What is the Definition of a Linear Pair?

Back

A linear pair is a pair of adjacent angles formed when two lines intersect, and they are supplementary.

Front

What is the Definition of Perpendicular Lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

If two angles are supplementary and one angle measures 70 degrees, what is the measure of the other angle?

Back

The other angle measures 110 degrees.

Front

What is the Definition of Congruent Angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the Definition of a Right Angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is the Definition of Parallel Lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

Front

What is the relationship between complementary angles?

Back

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