ETC

X(72803) = X(3)X(523)∩X(5)X(525) Barycentrics    -((b^2-c^2)*(-a^8+3*a^6*b^2-2*a^4*b^4-a^2*b^6+b^8+3*a^6*c^2-5*a^4*b^2*c^2+3*a^2*b^4*c^...

  • EUCLID 4404
  • ETC
    X(5459) Let ABC be a triangle, let A', B', C' be the midpoints of BC, CA, AB. Let L_a be the perpendicular through A' ...
  • 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 ...