Question

what is the vertex of the angle below? a. x b. y c. z d. none of these 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 common endpoint

In the angle formed by rays $\overrightarrow{YX}$ and $\overrightarrow{YZ}$, the common endpoint is point $Y$.

Answer:

B. Y