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X(3), X(19), X(55), X(57), X(84), X(198), X(365)

K145 is the locus of point P such that the pedal triangles of P and its X(31)-isoconjugate P* are orthologic, if we omit the line at infinity, its X(31)-isoconjugate and the antiorthic axis. See another generalization at K003 property 16. K145 is a member of CL021.

Its isogonal transform is pK(X1, X63) (see CL024) and its isotomic transform is pK(X561, X304)