The anticomplementary circle is the circumcircle of the anticomplementary triangle. It has radius R_A = 2R, where R is the circumradius of the reference triangle, and center at the orthocenter H. Its circle function is l = a^2/(b c), corresponding to the third power point X_32. It passes through Kimberling centers X_i for i = 146, 147, 148, 149, 150, 151, 152, and 153.

anticomplementary triangle | central circle | Johnson circles