do two vertical angles form a linear pair

Question

i tried searching it but i wasn't sure cause it was so confusing at first i thought i was getting it but i wasn't.

Answer 1

Vertical angles are a pair of nonadjacent angles, ∠1 and ∠2, formed by two intersecting lines.

A linear pair is two adjacent angles, ∠3 and  ∠4, formed by opposite rays. 

 

Thus, the vertical angles are not also a linear pair.