| A | B |
|---|
| Right Angle | An angle that measures exactly 90 degrees |
| Straight Angle | An angle that measures exactly 180 degrees |
| Acute Angle | An angle that measures less than 90 degrees |
| Obtuse Angle | An angle that measures between 90 and 180 degrees |
| Congruent Angles | Two angles that have the same measure |
| Degrees | The unit that angles are measured by |
| Vertical Angle | Share a vertex and a side, equal measure |
| Corresponding | When there are parallel lines these angles are in the same spot of the parallel lines |
| Alternate Interior | When there are parallel lines these two angles are inside the parallel lines and have the same measure |
| Adjacent Angles | Angles that are next to each other |
| Complimentary | Angles whose measure adds up to 90 degrees |
| Supplementary | Angles whose measure adds up to 180 degrees |
