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°

2. m∠1 + m∠5 = m∠1 + m∠4

3. m∠5 = m∠4

4. ray yz is parallel to ray uv

given
substitution
subtraction property of equality
if alternate interior angles equal, then line are ||