Question

which angle is complementary to ∠afb?

Explanation:

Step1: Recall complementary - angle definition

Two angles are complementary if their sum is 90 degrees.

Step2: Identify adjacent right - angle

Assume that the intersection of the lines at point F forms right - angles. Angle ∠AFB and ∠BFC together form a right - angle.

Answer:

∠BFC