Here are the definitions for each key term matched accordingly:
- Acute Angle: an angle that measures less than 90 degrees
- Adjacent Angles: two angles that share a vertex and a side
- Complementary Angles: two angles whose sum is 90 degrees
- Obtuse Angle: an angle that measures between 90 and 180 degrees
- Right Angle: an angle that measures 90 degrees
- Supplementary Angles: two angles whose sum is 180 degrees
- Vertical Angles: two angles across from each other when two lines intersect