Answer:
b, c, e, f
Explanation:
b. eod and aoc are vertical angles because they are basically mirrored to each other.
c. line AD is 180 degress because it is a straight across line. if you put together the two in C, they add up to 180
e. a bisector is something that splits something perfectly in two. line b does intersect at the halfway point.
f. they are complementary because they add up to a 90 degree angle together.