The Parry reflection point , the point X(110), a Fermat point and an isodynamic point lie in a circle with center O1. The Parry reflection point , the point X(110), the other Fermat point and the other isodynamic point lie in a circle with center O2. Let O be the circumcenter of ABC. The centroid of the triangle OO1O2 is the center of the Parry circle.