Excenter/Excircle

Author:
e.barron
An excenter is a point on the outside of a triangle that connects the intersections of the angle bisectors. The excenter is the center of the excircle. Every triangle has 3 excircles and excenters. On the worksheet below, you can move the pink points A, B, and C, to see how the excenters and excircles change depending on the movement of the points.