Question

use the figure and follow the directions below.
part 1 of 3
(a) name the sides of ( angle 1 ).
( overrightarrow{ba} )
( overrightarrow{bc} )
correct answer:
( overrightarrow{ba} )
( overrightarrow{bc} )
progress: 1/3
part 2 of 3
(b) name the vertex of ( angle dba ).

Explanation:

Step1: Recall vertex definition

The vertex of an angle is the common endpoint of the two rays forming the angle. For $\angle DBA$, the rays are $\overrightarrow{DB}$ and $\overrightarrow{BA}$.

Step2: Identify common endpoint

The common endpoint of $\overrightarrow{DB}$ and $\overrightarrow{BA}$ is point $B$.

Answer:

$B$