2 8 Practice Proving Angle Relationships - Unit 2 intro to mass and volume. The following theorems hold true for angles and can be used in proofs dealing with angles. ∠1 & ∠2 are vert. If two angles are vertical angles, then they are congruent. M∠1 + m∠2 = 180°. M∠1 + m∠3 = 180°. Web unit 1 intro to area and perimeter. Study with quizlet and memorize.
Web unit 1 intro to area and perimeter. If two angles are vertical angles, then they are congruent. Unit 2 intro to mass and volume. Study with quizlet and memorize. M∠1 + m∠2 = 180°. The following theorems hold true for angles and can be used in proofs dealing with angles. M∠1 + m∠3 = 180°. ∠1 & ∠2 are vert.