M3 Proof Practice

Front

What is the Substitution Property of Equality?

Back

If a = b, then a can be replaced by b in any expression.

Front

What does the Definition of a Right Angle state?

Back

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

Front

What does the Vertical Angle Theorem state?

Back

Vertical angles are congruent; if two angles are opposite each other when two lines intersect, they are equal.

Front

What is the Definition of Midpoint?

Back

A midpoint of a segment is the point that divides the segment into two equal parts.

Front

What is the Transitive Property of Equality?

Back

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

Front

What is the Reflexive Property of Equality?

Back

For any number a, a = a.

Front

What is the Segment Addition Postulate?

Back

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

Front

What is the Definition of Congruent Angles?

Back

Two angles are congruent if they have the same measure.

Front

What is the Corresponding Angle Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is congruent.

Front

What is the Definition of Complementary Angles?

Back

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