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Answer:
∠PMO, ∠OMP
Step-by-step explanation:
The rays forming the sides of the angle can be named in either order.
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Additional comment
If only one angle has this vertex, the angle could also be named by its vertex (∠M). However, here, there are two angles with vertex M, so that is not an option. (We have seen cases where those two angles would be named M1 and M2, but there is no convention supporting that naming that I'm aware of.)
