Angle & Segment Proofs

Front

What is the Transitive Property?

Back

If a = b and b = c, then a = c.

Front

What does the Definition of Midpoint state?

Back

A midpoint divides a segment into two equal parts.

Front

What is the Segment Addition Postulate?

Back

If point B is between points A and C, then AB + BC = AC.

Front

What are Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines cross. They are always congruent.

Front

What is the Definition of Complementary Angles?

Back

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

Front

What is the Definition of a Linear Pair?

Back

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

Front

What is the Addition Property of Equality?

Back

If a = b, then a + c = b + c for any c.

Front

What is the Definition of Congruence?

Back

Two figures are congruent if they have the same shape and size.

Front

What is the Definition of Bisect?

Back

To bisect means to divide something into two equal parts.

Front

What is the Definition of Supplementary Angles?

Back

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