In a word processing document or on a separate piece of paper, use the guide to construct a two column proof proving that lines l and m are parallel. Angles 1 and 2 are supplementary by definition. Upload the entire proof below. Given:
∠1 and ∠2 are supplementary angles
Prove:
l || m

STATEMENT REASON
1.∠1 and ∠2 are supplementary angles 1. Given
2. m ∠1 + m ∠2 = 180° 2.
3. ∠1 and ∠3 are supplementary angles 3. Exterior sides in opposite rays
4. 4.
5. m ∠1 + m ∠2 = m ∠1 + m ∠3 5.
6. 6.
7. l || m 7.
Two column proof fill in the blank numbers