In the diagram, ∠AOB and ∠COB form a linear pair. Which statement must be true about the angles?

Question

Linear pair
A. ∠AOB and ∠COB are supplementary to each other.
B. ∠AOB and ∠COB are supplementary to the same angle.
C. ∠AOB and ∠COB are complementary to each other.
D. ∠AOB and ∠COB are complementary to the same angle.

Answer 1

A. ∠AOB and ∠COB are supplementary to each other.