X3428¶
ISOGONAL CONJUGATE OF X3427
X3428 (ISOGONAL CONJUGATE OF X3427) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
Constructed Elements
Central Lines: {20, 3434}
Related Centers: X20 (DE LONGCHAMPS POINT), X3434 (ISOGONAL CONJUGATE OF X3433)
Trilinears: \(f(a,b,c) : f(b,c,a) : f(c,a,b)\), where \(f(a,b,c) = 1/x(3427)\)
Barycentrics: \(af(a,b,c) : bf(b,c,a) : cf(c,a,b)\)
Search Value (6, 9, 13): \(10.929256372256\)
Alternate Coordinates1 form
Barycentrics: \(g(a,b,c) : g(b,c,a) : g(c,a,b)\), where \(g(a,b,c) = a^{2}[a^{5} - a^{4}(b + c) - 2a^{3}(b^{2} + c^{2}) + 2a^{2}(b + c)(b - c)^{2} + a(b^{4} + 6b^{2}c^{2} + c^{4}) - (b + c)(b - c)^{4}] (E\). Danneels)