| A | B |
|---|
| Altitude | Starts at the vertex and goes perpendicular to the opposite side. |
| Altitude | vertex --> perpendicular opposite side |
| Altitude |  |
| Altitude |  |
| Median | Starts at vertex and goes to the midpoint of opposite side. |
| Median | vertex --> midpoint of opposite side |
| Median |  |
| Median |  |
| Angle Bisector | Bisects a vertex angle. |
| Angle Bisector |  |
| Angle Bisector |  |
| Perpendicular Bisector | Starts at midpoint of side and goes perpendicular. |
| Perpendicular Bisector |  |
| Perpendicular Bisector |  |
| Orthocenter | Point where altitudes meet. |
| Orthocenter | Altitude intersection. |
| Orthocenter |  |
| Orthocenter |  |
| Centroid | Point where the medians meet. |
| Centroid | Median intersection |
| Centroid |  |
| Incenter | Point where angle bisectors meet. |
| Incenter | Angle bisector intersection |
| Incenter |  |
| Circumcenter | Point where perpendicular bisectors meet. |
| Circumcenter | Perpendicular bisector intersection |
| Circumcenter |  |
| Circumcenter |  |
