Question

which angles are vertical angles? ∠ihk and ∠jkh ∠ihk and ∠lkh ∠ihk and ∠ghf ∠ihk and ∠ihf

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are non - adjacent angles opposite each other.

Step2: Analyze the given angles

In the figure, when two lines intersect at point H and point K. ∠IHK and ∠GHF are non - adjacent and opposite each other formed by the intersection of the two lines.

Answer:

∠IHK and ∠GHF