Match the reasons with the statements. complete the proof for theorem 3-16 above, with the information given. given: m1 = m2 prove: l | | m plan: same as theorem 3-15 1. m∠1 = m∠2 if corresponding angles are equal, then lines are parallel. 2. m∠1 = m∠3 given 3. m∠2 = m∠3 substitution 4. l||m vertical angles are equal.