Question

other than itself, which angle is congruent to ∠gdh?

Explanation:

Step1: Recall vertical angles property

Vertical angles are congruent. Vertical angles are formed when two lines intersect.

Step2: Identify vertical angle of ∠GDH

When looking at the intersection of lines, ∠GDH and ∠EGC are vertical angles.

Answer:

∠EGC