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X(3), X(4), X(3426), X(46023), X(46024)

infinite points of K243

points of K003 on (O), vertices of the CircumNormal triangle

foci of the inconic with center X(8703)

isogonal conjugates of the foci of the Steiner circum-ellipse, see below

Geometric properties :

K1437 is the isogonal transform of the stelloid K309.

It is a member of the pencil of cubics containing K003, K009, K361, K405, K664, K1434. See Table 54, column P = [X3].

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K1437 passes through the isogonal conjugates of the foci of the Steiner circum-ellipse which also lie on K039 and K172.

• the isogonal conjugates of the real foci lie on the line LR through {154, 5638, 21032} and on the cicum-conic CR through {6, 1379}.

• the isogonal conjugates of the imaginary foci lie on the line LI through {154, 5639, 21036} and on the cicum-conic CI through {6, 1380}.

The SEARCH numbers are 1.19407504498094, -3.16973940371998 and -0.772310070091985, 0.772310070091985.