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X(3), X(4), X(6), X(15), X(16), X(23), X(2574), X(2575), X(7712)

Q1, Q2, Q3 : vertices of the Thomson triangle

Ka, Kb, Kc : vertices of the tangential triangle

foci of the inconic with center X(141)

Ua*, Ub*, Uc* as in the page K001

isogonal conjugates of the vertices of the pedal triangle of X(3) wrt the antimedial triangle

Q136 is a circular quartic with singular focus X(23) and with two real asymptotes which are the parallels at X(858) to those of the Jerabek hyperbola.

It is related with stelloidal pentagonal circum-quartics. See Q125 and specially Q132.

Q136 is the 4th polar of O in Q037.

See also Q139.