Complete the reasons for the proof.
Given:
m<3 = m<4
To Prove:
<1, <2 are supplementary

2. 2 sides in a line
3. linear (or) supplementary
5. Vertically, equal
6.Substitution
7. alternate exterior angles
Answer:
see below
Step-by-step explanation:
1. given
2. adjacent sides in straight line
3. definition of supplementary adjacent angles
4. substitution
5. opposite angles are equal
6. substitution
7. definition of alternate exterior angles