# Concyclic Points Associated with an Angle Bisector and an Excircle

Concyclic Points Associated with an Angle Bisector and an Excircle

Let ABC be a triangle with incenter I and circumcenter O, and let J be the excenter opposite A. Let the angle bisector from A intersect the circumcircle at M. Then B, C, I, and J lie on a circle centered at M.