| A | B |
|---|
| Vertical Angles | "bow-tie" angles. They are located across from each other adn are always congruent. |
| Supplementary Angles | Two angles that add up to 180 degrees |
| Complementary Angles | Two angles that add up to 90 degrees |
| Parallel | Lines that never intersect |
| Transversal | A line that crosses 2 parallel lines |
| Alternate Interior Angles | Angles located on the INSIDE of parallel lines. They are on opposite sides of the transversal. |
| Alternate Exterior Angles | Angles located on the OUTSIDE of parallel lines. They are on opposite sides of the transversal. |
| Corresponding Angles | Angles that "match up" if you were to smooch the two parallel lines together. |
| Right angle | One angle that measures 90 degrees. |
| Straight angle | An angle that measures 180 degrees |
