X2652¶
TRILINEAR POLE OF PU(81)
X2652 (TRILINEAR POLE OF PU(81)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
Constructed Elements
Central Lines: {243, 415}, {409, 662}
Related Centers: X2651 (CROSSDIFFERENCE OF PU(81)), X243 (-LINE CONJUGATE OF X73), X415 (-HIRST INVERSE OF X29), X409 (EULER X21-1st-SUBSTITUTION POINT), X662 (TRILINEAR POLE OF LINE X1X21)
Trilinears: \(f(a,b,c) : f(b,c,a) : f(c,a,b)\), where \(f(a,b,c) = (\cos B + \cos C)/(\cos^{2} B + \cos^{2} C - \cos^{2} A + \cos B \cos C - \cos C \cos A - \cos A \cos B)\)
Barycentrics: \((\sin A)f(A,B,C) : (\sin B)f(B,C,A) : (\sin C)f(C,A,B)\)
Search Value (6, 9, 13): \(3.758202836300\)