Answer
a) Adjacent pairs are:
1&2
2&4
4&3
3&1
5&6
6&8
8&7
7&5
b) Vertical angle pairs are:
1&4
2&3
5&8
6&7
Work Step by Step
a) Adjacent angles have the same vertex and share a side that is between the two angles.
b) Vertical angles are opposite each other when 2 lines intersect.
