Question

mo and pr are parallel lines. which angles are vertical angles? ∠onq and ∠mnl ∠onq and ∠onl ∠onq and ∠pqs ∠onq and ∠rqn

Explanation:

Step1: Recall the definition of vertical angles

Vertical angles are the angles opposite each other when two lines intersect.

Step2: Analyze each option

• For $\angle ONQ$ and $\angle MNL$: They are not formed by the intersection of two lines in a vertical - angle - forming way.
• For $\angle ONQ$ and $\angle ONL$: They are adjacent angles, not vertical angles.
• For $\angle ONQ$ and $\angle PQS$: Lines $MO$ and $PR$ are parallel, and $\angle ONQ$ and $\angle PQS$ are not vertical angles.
• For $\angle ONQ$ and $\angle RQN$: When lines $PR$ and $SL$ intersect at point $Q$, $\angle ONQ$ and $\angle RQN$ are opposite each other.

Answer:

$\angle ONQ$ and $\angle RQN$