# Points of Concurrency Notes

- Author:
- Kevin Tanton

## Draw all three perpendicular bisectors. make sure to draw your perpendicular bisectors long enough that they all intersect.

When three or more lines intersect at a single point, they are

**concurrent**, and the point of intersection is called the**point of concurrency**.Here is why the point of concurrency is important with perpendicular bisectors. This point of concurrency is
called the

**circumcenter**. The**circumcenter***CAN*be outside of the triangle.## Construct all of the angle bisectors in the triangle below.

The point of concurrency of the angle bisectors is called the

**incenter**.## Construct all of the medians in the triangle below.

The point of concurrency of all medians is called the

**centroid**. The**centroid**is the center of gravity for a triangle.## Construct all of the altitudes in the triangle below.

The point of concurrency of the altitudes is called the

**orthocenter**.