Question

look at this diagram: if gi and jl are parallel lines and m∠lkh = 117°, what is m∠ghk?

Explanation:

Step1: Identify angle - relationship

$\angle LKH$ and $\angle GHK$ are vertical angles.

Step2: Recall vertical - angle property

Vertical angles are congruent. So $m\angle GHK=m\angle LKH$.

Answer:

$117$