ETC1

X(73154) = X(3)X(356)∩X(6)X(3275) Barycentrics    Sin[A]*(-2*(Cos[A/3] + 2*Cos[B/3]*Cos[C/3])*(Sqrt[3]*(Cos[2*A/3] + Cos[2*B/3] + Cos[2*...

  • EUCLID 4404
  • ANOPOLIS CIRCLE
    Let ABC be a triangle. Denote: (N1),(N2), (N3) = the NPCs of IBC, ICA, IAB, resp. (12), (13) = the reflections of (N1) in BI, CI, resp. ...
  • HOMOTHETIC TRIANGLES and EULER LINES
    Theorem 1. Let ABC be an equilateral triangle and P a point. The Euler lines of the triangles PBC,PCA,PAB are concurent.Denote the point ...