List A1
Roles of Point.
The "Discoverer" database version: October 2013.
Last update: 2013-12-10

The Complement of the Complement of the Internal Center of Similitude of the Incircle and the Circumcircle is the
  1. Circumcenter of the Inner Yff Triangle of the Half-Median Triangle.
  2. Exeter Point of the Intouch Triangle of the Half-Median Triangle.
  3. Internal Center of Similitude of the Incircle and the Circumcircle wrt the Half-Median Triangle.
  4. Perspector and Homothetic Center of the Medial Triangle and the Euler Triangle of the Internal Center of Similitude of the Incircle and the Circumcircle.
  5. Perspector and Homothetic Center of the Medial Triangle and the Triangle of the Circumcenters of the Pedal Corner Triangles of the Internal Center of Similitude of the Incircle and the Circumcircle.