Question

name the marked angle in 2 different ways.

Explanation:

1. The marked angle has its vertex at point M, formed by segments MN and MO. When naming an angle with three letters, the vertex letter is placed in the middle.
2. Since this is the only angle explicitly marked at vertex M, it can also be named using just the vertex letter.

Answer:

$\angle NMO$
$\angle M$