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Angle two rays with the same endpoint.
Sides (of an angle) the rays of the angle.
Vertex (of an angle) the endpoint of the angle.
Adjacent Angles two coplanar angles with a common side, a common vertex, and no common interior points.
Vertical Angles two angles whose sides are opposite rays.
Complementary Angles two angles whose measures have a sum of 90.
Supplementary Angles two angles whose measure have a sum of 180.
Acute Angles Angles with a measure less than 90 degrees.
Obtuse Angles Angles with a measure more than 90 degrees.
Right Angles Angles with a measure of exactly 90 degrees.
Created by: Stanfjos000