Are Vertically Opposite Angles Supplementary?

A pair of vertically opposite angles are always equal to each other. Also, a vertical angle and its adjacent angle are supplementary angles, i.e., they add up to 180 degrees. For example, if two lines intersect and make an angle, say X=45°, then its opposite angle is also equal to 45°.

Are vertical angles supplementary?

Vertical angles are supplementary angles when the lines intersect perpendicularly. For example, ∠W and ∠ Y are vertical angles which are also supplementary angles.

Is a vertical angle supplementary or complementary?

Vertical angles are opposite one another. Vertical angles are congruent (equal). Supplementary angles add up to 180º. Complementary angles add up to 90º.