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X(2), X(3), X(6), X(25), X(32), X(66), X(206), X(1676), X(1677), X(3162) vertices of the tangential triangle midpoints of ABC vertices of the Grebe triangle 

K177 is the isogonal transform of K141. Its asymptotes are parallel to those of K169 = pK(X6, X69) and also to those of K1365 = pK(X2, X315). Locus properties :

