Answer:
Option B is correct.
angle EDC and angle ADB
Step-by-step explanation:
Vertical angles states that they are a pair of non adjacent angles formed when two lines are intersects , also they never share a side and they always have a common vertex.
From the given figure.
Two lines which are intersecting i.e, AC and EB
Common vertex = D
then by definition of vertical angles:
[tex]\angle EDC[/tex] and [tex]\angle ADB[/tex] are vertical angles.
therefore, a pair of vertical angles in the figure is angle EDC and angle ADB