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∑ a (b^2 + b c + c^2) (y - z) y z = 0

X(1), X(2), X(9), X(75), X(984), X(2276), X(3661), X(3789), X(6376), X(7179), X(22116)

vertices of the medial triangle

Geometric properties :

K1038 is the transform of K1012 under the symbolic substitution SS{a -> √a}.

K1038 is also the barycentric quotient K1017 ÷ X(1).

It is a weak cubic anharmonically equivalent to K131 as in Table 67.