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X(4), X(114), X(371), X(372), X(511), X(2009), X(2010), X(3563)

feet of the altitudes

K337 is another example of antigonal pK. See CL019. It is a circular cubic with singular focus X(115), the center of the Kiepert hyperbola.

K337 is the isogonal transform of K336 = pK(X248, X98), an inversible pK.

See also Table 46 and Table 55.

K337 is the locus of pivots of circular pKs whose orthic line passes through the Lemoine point. The locus of the poles is pK(X32, X230). See CL035.