Two supporting reasons are missing from the proof. Complete the proof by dragging and dropping the appropriate reasons into each of the empty boxes. Givin m||n m2 = 60
prove m7 = 120

1. m||n
m2 = 60. Givin

2. 8 = 2.

3. m8 = m2. angle congruence postulate

4. m8 = 60. substitution property of equality

5. m7 + m8 = 180. linear pair postulate

6. m7 + 60 = 180. substitution property of equality

7. m7 = 120.