One-Step Proof Arguments

Front

What theorem states that if two angles form a linear pair, then they are supplementary?

Back

Linear Pair Theorem

Front

What justifies the last step of an equation when both sides are multiplied by the same number?

Back

Multiplication Property of Equality

Front

What is a proof argument?

Back

A sequence of justified conclusions.

Front

What is the definition of a midpoint?

Back

M is the point between C and D on segment CD where CM = MD.

Front

What is a conditional statement?

Back

An 'If-then' statement.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the Vertical Angles Theorem?

Back

Vertical angles are congruent.

Front

What does the Addition Property of Equality state?

Back

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

Front

What is the definition of congruent angles?

Back

Angles that have the same measure.