Question

identifying included angles
use △def to complete the statements.
angle e is the included angle between sides
the included angle between sides fe and df is angle

Explanation:

Step1: Identify sides for ∠E

In $\triangle DEF$, angle $E$ is formed by the two sides that meet at vertex $E$. These sides are $\overline{FE}$ and $\overline{DE}$.

Step2: Identify angle for sides FE & DF

The included angle between sides $\overline{FE}$ and $\overline{DF}$ is the angle where these two sides meet, which is at vertex $F$, so it is $\angle F$.

Answer:

1. FE and DE
2. F