Angle Proofs Terms

Front

What does the Vertical Angles Theorem state?

Back

If two angles are vertical, then they are congruent.

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect to form right angles.

Front

What is an angle bisector?

Back

An angle bisector is a ray that divides an angle into two equal parts.

Front

What is the relationship between complementary angles?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

What is the definition of supplementary angles?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What is the definition of adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

What is the definition of a linear pair?

Back

A linear pair is a pair of adjacent angles whose non-common sides form a straight line.

Front

What does the Transitive Property of Equality state?

Back

If angle A is congruent to angle B, and angle B is congruent to angle C, then angle A is congruent to angle C.

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.