X580¶
ORTHOGONAL OF X284
X580 (ORTHOGONAL OF X284) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
Constructed Elements
Central Lines: {3, 6}, {31, 40}
Related Centers: X270 (ISOGONAL CONJUGATE OF X201), X1 (INCENTER), X3 (CIRCUMCENTER), X6 (SYMMEDIAN POINT), X31 (2nd POWER POINT), X40 (BEVAN POINT)
Trilinears: \(f(A,B,C) : f(B,C,A) : f(C,A,B)\), where \(f(A,B,C) = \sin A + \cot D/2 \cos A\), cot \(D/2 = (e_{1} - e_{2} - 2abc)/[4 \operatorname{area} (a + b + c)]\), where \(e_{1}\), \(e_{2}\) are as for X579
Barycentrics: \((\sin A)f(A,B,C): (\sin B)f(B,C,A) : (\sin C)f(C,A,B)\)
Search Value (6, 9, 13): \(-2.718036865689\)