Match the reasons to the statements in the proof. Given: m 1 + m 5 = 180° m 1 + m 4 = 180° Prove: | | 1. m∠1 + m∠5 = 180° and m∠1 + m∠4=180° Subtraction property of equality 2. m∠1 + m∠5 = m∠1 + m∠4 Substitution 3. m∠5 = m∠4 If alternate interior angles equal, then lines are ||. 4. is parallel to Given