Question

which angles are vertical angles? ∠onl and ∠onq ∠onl and ∠pqn ∠rqs and ∠onq ∠rqs and ∠pqn

Explanation:

Step1: Recall vertical - angle definition

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

Step2: Analyze each option

• $\angle ONL$ and $\angle ONQ$ are adjacent angles, not vertical angles.
• $\angle ONL$ and $\angle PQN$ are not formed by the intersection of the same two - line pairs.
• $\angle RQS$ and $\angle ONQ$ are not vertical angles.
• $\angle RQS$ and $\angle PQN$ are vertical angles as they are formed by the intersection of lines $PR$ and $LS$ and are opposite each other.

Answer:

$\angle RQS$ and $\angle PQN$