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K420

See the general equation in Table 32

K420a = Cev(–π/6)

K420b = Cev(π/6)

on both curves :

X(2), X(5),

on K420a :

X(14), X(18), X(302), X(395), X(471), X(8836), X(10218)

on K420b :

X(13), X(17), X(303), X(396), X(470), X(8838), X(10217)

K420a and K420b are the Kiepert Cevian Mates of the Napoleon cubic K005. See explanations in Table 32.

K420a = pK(X14, X8836)

K420b = pK(X13, X8838)