Question

which angle is adjacent to ∠tvs? ∠nvt what is m∠nvs? m∠nvs = \boxed{\space}°

Explanation:

Step1: Identify the relationship between angles

Adjacent angles share a common side and vertex. $\angle TVS$ and $\angle NVT$ do not share a common side, so this part is incorrect (but the main task is to find $m\angle NVS$). For $\angle NVS$, we know that a straight - line (semicircle) has an angle measure of $180^{\circ}$. There is a right - angle (part of the figure, assume $90^{\circ}$ is not relevant here as per the given $110^{\circ}$ and $70^{\circ}$).

Step2: Calculate $m\angle NVS$

We use the fact that the sum of angles around a point (semicircle) is $180^{\circ}$. But if we consider the two given angles related to $\angle NVS$. Wait, no, actually, if we assume that the angle $\angle NVS$ is composed of two parts. Wait, no, looking at the circle - like figure (semicircle). Wait, no, another approach: If we assume that the total around point $V$ (semicircle) is $180^{\circ}$. But if we consider the two non - overlapping angles that make up $\angle NVS$. Wait, no, actually, if we consider that $\angle NVS=110^{\circ}+70^{\circ}$ (assuming they are adjacent and form $\angle NVS$).
$$m\angle NVS = 110^{\circ}+70^{\circ}$$
$$m\angle NVS=180^{\circ}$$

Answer:

$180$