Question

use the figure and follow the directions below.
progress: 0/3
part 1 of 3
(a) name the sides of ∠1.

Explanation:

Step1: Recall angle side definition

An angle is formed by two rays with a common endpoint. For $\angle 1$, the common endpoint is $B$.

Step2: Identify the rays

The two rays forming $\angle 1$ are $\overrightarrow{BA}$ and $\overrightarrow{BC}$ (or the sides can be named as segments $BA$ and $BC$ since they are the parts of the rays from the vertex).

Answer:

The sides of $\angle 1$ are $\boldsymbol{\overrightarrow{BA}}$ (or $BA$) and $\boldsymbol{\overrightarrow{BC}}$ (or $BC$).