Two angles 1 and 2, in a diagram are supplementary. If m 1 = 77°. What equation can write to solve for m 2? Let m 2 = x°

A. x°= 77°
B. x°+ 77° = 90°
C. x° + 77° = 180°
D. x°= 90° - 77°

1 answer

C. x° + 77° = 180°