r1583

Let HaHbHc be the orthic triangle. Let Ab (resp. Ac) be the homothetic transform of A with center Hb (resp. Hc) and the same ratio. Define analogously Bc, Ba, Ca, Cb (always with the same ratio). The lines AbAc, BcBa, CaCb bound a triangle with circumcenter X in the Euler line of ABC.


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