Question

look at this angle: what is the vertex?

Explanation:

Step1: Recall vertex definition

The vertex of an angle is the common - endpoint of the two rays that form the angle.

Step2: Identify the common - endpoint

In the angle formed by rays $\overrightarrow{UT}$ and $\overrightarrow{UV}$, the common endpoint is point $U$.

Answer:

$U$