Question

name the marked angle in 2 different ways.

Explanation:

Step1: Use vertex - based naming

An angle can be named by its vertex. Here the vertex is N, so one way to name the angle is $\angle N$.

Step2: Use three - point naming

An angle can also be named using three points where the middle point is the vertex. So another way to name the angle is $\angle PNO$ (the order of the non - vertex points can be reversed as long as the vertex is in the middle, so $\angle ONP$ is also correct).

Answer:

$\angle N$, $\angle PNO$