Acute Angle Adjacent Angles Complementary Angles Obtuse Angle Right Angle Supplementary Angles Vertical Angles
- Acute Angle: An angle that measures less than 90 degrees.
- Adjacent Angles: Two angles that share a common vertex and a common side, but do not overlap.
- Complementary Angles: Two angles that add up to 90 degrees.
- Obtuse Angle: An angle that measures more than 90 degrees but less than 180 degrees.
- Right Angle: An angle that measures exactly 90 degrees.
- Supplementary Angles: Two angles that add up to 180 degrees.
- Vertical Angles: A pair of nonadjacent angles formed by two intersecting lines. They have the same vertex and their sides are opposite rays.