Please help! Find ∠FGD.
A. 42.5°
B. 70°
C. 85°
D. 170°

Answer:
C. 85°
Step-by-step explanation:
The angle is half the measure of the subtended arc. That arc (DF) is ...
360° -70° -120° = 170°
Half that measure is ...
∠FGD = 170°/2 = 85° . . . . . matches choice C