+1982 Which pair of angle measurements are supplements?
A. 59; 121
B. 89; 99
C. 62; 138
D. 30; 60
In the diagram below, lines a and b are parallel and cut by transversal, t. If angle 1 is 120 degrees, find the measure of angle 8.
A. 60
B. 180
C. 120
D. 90
