Two Column Proofs Review

Front

What is the Transitive Property?

Back

If angle A = angle B and angle B = angle C, then angle A = angle C.

Front

What is the Substitution Property?

Back

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

Front

What does the Linear Pair Postulate state?

Back

If two angles form a linear pair, then they are supplementary.

Front

What is the Corresponding Angles Postulate?

Back

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

Front

What is the definition of congruent angles?

Back

Angles that have the same measure.

Front

What is the definition of supplementary angles?

Back

Two angles whose measures add up to 180 degrees.

Front

What is the Vertical Angle Theorem?

Back

Vertical angles are congruent.

Front

What is the Alternate Interior Angles Theorem?

Back

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

Front

What is a linear pair?

Back

A pair of adjacent angles formed when two lines intersect.

Front

What is the definition of a theorem?

Back

A statement that has been proven on the basis of previously established statements.