complimentary:
Two angles are called complementary when their measures add to 90 degrees. Two angles are called supplementary when their measures add up to 180 degrees.
equivalent:
Two rotation angles that have the same measure.
adjacent:
Two angles are Adjacent when they have a common side and a common vertex (corner point) and don't overlap.
supplementary:
Two Angles are Supplementary when they add up to 180 degrees.
in this case i believe it is supplementary.
