Question

gi and jl are parallel lines. which angles are vertical angles? ∠ihk and ∠jkm ∠ihk and ∠ghf ∠lkh and ∠ghf ∠lkm and ∠ihf

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect, and they are opposite each other.

Step2: Analyze each option

• For $\angle IHK$ and $\angle JKM$, they are not formed by the same intersection of lines.
• For $\angle IHK$ and $\angle GHF$, they are formed by the intersection of line $MF$ and line $GI$, and they are opposite each other.
• For $\angle LKH$ and $\angle GHF$, they are not vertical - angles.
• For $\angle LKM$ and $\angle IHF$, they are not vertical - angles.

Answer:

$\angle IHK$ and $\angle GHF$