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X(2), X(3), X(3098), X(5092), X(7470), X(39162), X(39163), X(39164), X(39165), X(55177), X(55178)

foci of the Steiner inellipse

vertices of the Thomson triangle

antipodes of points of K020 = pK(X6, X384) on (O)

infinite points of pK(X6, P) with P = reflection of X(384) in X(376)

vertices of the 1st and 2nd Neuberg triangles (centers of the Neuberg circles)

Geometric properties :

See Table 81 for general properties.

K1334 is the cubic F(T) obtained when T = 4 / (3 - tan²ω) where ω is the Brocard angle.

X(55177) and X(55178) are the Thomson isogonal conjugates of X(32) and X(39).