Answer:
Part a) and are adjacent angles
Part b) and are adjacent and supplementary angles
Step-by-step explanation:
we know that
Two angles are S<u>upplementary</u> if the sum of its angles is equal to
Two angles are <u>Adjacent</u> when they have a common side and a common vertex.
case A) and
we know that
and have a common side (OB) and a common vertex (point O)
therefore
They are adjacent angles
case B) and
we know that
and have a common side (OC) and a common vertex (point O)
therefore
They are adjacent angles
and
------> by supplementary angles
therefore
and are adjacent and supplementary angles