r550

Let A'B'C' be the intouch triangle of ABC, P a point inside the incircle, X, Y, Z, X', Y', Z'  the intersections between the cevians of P and the incircle. The lines A'X, B'Y, C'Z, A'X', B'Y', C'Z' concur three at a time at four points lying in a circumconic.


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