In a word processing document or on a separate plece of paper, use the guide to construct a two column proof proving
that lines / and mare parallel. Angles 1 and 2 are supplementary by definition. Upload the entire proof below.
Given:
21 and 2 are supplementary angles
Prove:
3
2
STATEMENT
REASON
1.41 and 42 are supplementary angles 1. Given
2. mz1+mz2-180°
2.
3.41 and 23 are supplementary angles 3. Exterior sides in opposite rays
4.
4.
5. m21+mz2 = m1+mz3
5.
6.
7. Il m
6.
7.