Question

In the graphic below, one pair of vertical angles is

1
5
2
6
3
7
4
8
angles 1 and 6
angles 1 and 2
angles 1 and 3
angles 1 and 5

Answer 1

The answer is angles 1 and 6.
Vertical angles are equal to each other and you can simply identify them by seeing if they’re next to each other separated by the intersection.
1 and 2 are supplementary.
1 and 3 are alternate angles.
1 and 5 are supplementary.