Question

name the vertex of the angle. e f e, f, and d are vertices d

Explanation:

Step1: Recall the definition of an angle's vertex

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

Step2: Identify the common endpoint in the given angle

In the angle \( \angle DEF\) (formed by rays \(ED\) and \(EF\)), the common endpoint is \(E\).

Answer:

\(E\)