Unit 2 Geometry Properties

Front

What is the Definition of Vertical Angles?

Back

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

Front

What is the Segment Addition Postulate?

Back

The Segment Addition Postulate states that if point B is between points A and C, then AB + BC = AC.

Front

What is the Substitution Property?

Back

The Substitution Property states that if two quantities are equal, one can be substituted for the other in any expression.

Front

What is the Subtraction Property?

Back

The Subtraction Property states that if two quantities are equal, subtracting the same amount from both sides will keep the equation balanced.

Front

What is the Complements Theorem?

Back

The Complements Theorem states that if two angles are complementary to the same angle (or to congruent angles), then they are congruent.

Front

What is the Definition of Complementary Angles?

Back

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

Front

What is the Definition of Congruence?

Back

Congruence means that two figures have the same shape and size, or two angles have the same measure.

Front

What is the Reflexive Property?

Back

The Reflexive Property states that any quantity is equal to itself, i.e., a = a.

Front

What is the Symmetric Property?

Back

The Symmetric Property states that if a = b, then b = a.

Front

What is the Transitive Property?

Back

The Transitive Property states that if a = b and b = c, then a = c.