Question

which angles form a linear pair?
∠prl and ∠lrm
∠orp and ∠mrn
∠mrn and ∠nro
∠lrp and ∠orp

Explanation:

Step1: Recall linear - pair definition

Two angles form a linear pair if they are adjacent and their non - common sides are opposite rays.

Step2: Analyze each option

For $\angle MRN$ and $\angle NRO$, they are adjacent and their non - common sides $\overrightarrow{RM}$ and $\overrightarrow{RO}$ are opposite rays.

Answer:

$\angle MRN$ and $\angle NRO$