Σάββατο 17 Μαρτίου 2012

HOW THEY DO GEOMETRY IN CHINA

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ETC1

X(73191) = X(3)X(74)∩X(24)X(49) Barycentrics    a^2*(3*a^8-8*a^6*b^2+6*a^4*b^4-b^8-8*a^6*c^2+8*a^4*b^2*c^2-2*a^2*b^4*c^2+2*b^6*c^2+6*a^4*...

  • 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 ...