Question

which angles are vertical angles? ∠lki and ∠mnk ∠mnk and ∠onp ∠mnk and ∠lkn ∠jki and ∠lki

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are opposite each other and are congruent.

Step2: Analyze the given angles

In the figure, lines $JL$ and $MP$ intersect at points $K$ and $N$. $\angle MNK$ and $\angle LKN$ are opposite each other at the intersection of the two lines.

Answer:

$\angle MNK$ and $\angle LKN$