1. In the diagram below , lines a and b are paraller and cut by traversal, t of angle 3 is 120 degrees, find the measure of angle 7.

A. 60

B. 90

C. 120

D. 180

2. in the diagram below , lines a and b are parallel and cut by traversal, t of angle 2 is 50 degrees, find the measure of angle 8.

A. 120

B. 130

C. 50

D. 100

3. In the diagram below , lines a and b are parallel and cut by traversal, t of angle 6 is 50 degrees, find the measure of angle 4.

A. 120

B. 130

C. 50

D. 100

Please Help me!