Answer:
Explanation:
Vertical angles are a pair of opposite angles formed by intersecting lines. They are of the same measure.
The options:
- Vertical angles are adjacent angles. - False, opposite angles.
 - Vertical angles are complementary angles. - False, are of same measure.
 - Vertical angles are nonadjacent angles. - TRUE
 - Vertical angles are supplementary angles. - False, are of the same measure.