| A | B |
|---|
What is the dotted line called?,  | Altitude |
What is the red line called?,  | Angle Bisector |
What is the intersection point called?,  | Centroid |
What is the intersection point called?,  | Circumcenter |
What are these three points? ----- (ONE name),  | Points of Concurrency |
What is the point of intersection called?,  | Incenter |
What are these lines called?,  | Lines of Concurrency |
What do we call line BD?,  | Median |
What the intersection point called?,  | Orthocenter |
What is line DE called?,  | Perpendicular Bisector |
| Definition of Perpendicular Bisector | A line that intersects and is perpendicular to a side |
| Definition of Concurrent Lines | Three or more lines that intersect at a common point |
| Definition of Point of Concurrency | The point where concurrent lines intersect |
| Definition of Circumcenter | The point of concurrency of the perpendicular bisectors of a triangle |
| Definition of Incenter | The point of concurrency of the angle bisectors of a triangle |
| Definition of Angle Bisector | A line that bisects an angle and intersects the opposite angle |
| Definition of Median | A line segment that connects a vertex with the midpoint of the opposite side |
| Definition of Centroid | The point where all the 3 medians of a triangle meet |
| Definition of Altitude | A segment that goes from the vertex and is perpendicular to the opposite side |
| Perpendicular Bisector Theorem --- Conditional Statement | Any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment,  |
| Perpendicular Bisector Theorem --- Converse Statement | Any point equidistant from the endpoints of a segment lies on the perpendicular bisector of the segment, |
| Circumcenter Theorem | The circumcenter of a triangle is equidistant from the vertices of the triangle.,  |
| Angle Bisector Theorem --- Conditional Statement | Any point on the angle bisector is equidistant from the sides of the angle,  |
| Angle Bisector Theorem --- Converse Statement | Any point equidistant from the sides of an angle lies on the angle bisector, |
| Incenter Theorem | The incenter of a triangle is equidistant from each side of the triangle,  |
| Centroid Rule/Theorem | The centroid of a triangle is located at 2/3 of the distance from an angle to the opposite side,  |
| Definition of Orthocenter | The intersection point of the altitudes of a triangle |
