Answer:
all choices apply
Step-by-step explanation:
Angles are "adjacent" when they share a vertex and the ray between them. Thus the following pairs are adjacent:
- 90° and ∠A
- ∠A and ∠B
- ∠B and ∠C
- ∠C and 27°
- 27° and 90°
A linear pair is an adjacent pair in which the non-common rays point in opposite directions (lie on the same line). The angles of a linear pair total 180°, so are supplementary.
These pairs of angles are supplementary:
Vertical angles are not adjacent, but share a vertex and have sides that are opposite rays. They are supplementary to the same angle. here, angles A and C are a vertical pair.
All of the answer choices apply.
