Question

how can you find m∠nvt?
90° + 20° = 110°
90° − 20° = 70°
20° + 20° = 40°
90° + 90° = 180°

Explanation:

Step1: Identify known angles

We know $\angle NVE = 90^\circ$ and $\angle EVT = 20^\circ$.

Step2: Sum the angles for $\angle NVT$

$\angle NVT$ is the sum of $\angle NVE$ and $\angle EVT$.
$m\angle NVT = 90^\circ + 20^\circ$

Answer:

$90^\circ + 20^\circ = 110^\circ$