no, not exactly.
you bet it can
No, in fact, vertical angles can't be a linear pair. Vertical angles are opposite from each other which also make them equal each other. A linear pair has two angles adjacent to each other that eqaul 180 degrees.
In a Linear Pair the 2 angles add up to 180 degrees while Vertical Angles are just 2 vertical angles that are congruent.
Yes, they can.
no it's impossible
sometime true
The term that best describes a pair of vertical angles that are also supplementary is "linear pair." Vertical angles are formed by the intersection of two lines and are equal in measure, while supplementary angles add up to 180 degrees. However, vertical angles alone are not necessarily supplementary; they only form a linear pair when they are adjacent and their measures sum to 180 degrees.
vertical angles theorem
Forgotten, as requested.
Yes.
No. All linear pair angles are supplementary, but supplementary angles do not have to be a linear pair.
Yes, a vertical line is linear, but it is not a function, because every point on the line has the same x value.