In the diagram below, lines a and b are parallel and cut by transversal, t. If angle 3 is 120 degrees, find the measure of angle 7.

A: 60
B: 90
C: 120
D: 180

In the diagram below lines a and b are parallel and cut by transversal t If angle 3 is 120 degrees find the measure of angle 7 A 60 B 90 C 120 D 180 class=