Question

e. m 90° n o ∠__ is a __ angle f.

Explanation:

Step1: Identify the angle

The angle shown is formed by rays $NM$ and $NO$. So the angle is $\angle MNO$.

Step2: Determine the type of angle

Since the measure of the angle is $90^{\circ}$, it is a right - angle.

Answer:

$\angle MNO$; right