Proofs 3

Front

What is the Alternate Interior Angle Theorem?

Back

If two parallel lines are cut by a transversal, then the resulting alternate interior angles are congruent .

Front

Name the angle relationship. Options: Alternate Interior, Alternate Exterior, Corresponding, Vertical Angles

Back

Vertical Angles

Front

Name the angle relationship: Alternate Interior, Alternate Exterior, Corresponding, Vertical Angles

Back

Alternate Interior

Front

If B is the midpoint of AC, then AB ≅ BC.

Back

Definition of Midpoint

Front

∠4 = ∠4

Back

Reflexive Property of Equality

Front

If ∠A and ∠B are complementary, then m∠A + m∠B = 90°.

Back

Definition of Complementary Angles

Front

If ∠1 and ∠2 are supplementary, then m∠1 + m∠2 = 180°.

Back

Definition of Supplementary Angles

Front

If ∠CAT is a right angle, then m∠CAT = 90°. Options: Definition of Right Angle, Definition of Congruent Angles, Angle Addition Postulate, Segment Addition Postulate

Back

Definition of Right Angle

Front

If AC ⊥ BD, then ∠DBC is a right angle.

Back

Definition of Perpendicular Lines

Front

If DB bisects ∠ABC, then ∠ABD = ∠CBD.

Back

Definition of Angle Bisector