ETC

X(72902) = (name pending) Barycentrics    (a^9-a^8*b+4*a^7*b^2-8*a^6*b^3+4*a^5*b^4+4*a^4*b^5-8*a^3*b^6+4*a^2*b^7-a*b^8+b^9-3*a^8*c-2*a^6*b...

  • EUCLID 4404
  • 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 ...
  • 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' ...