X1706¶
EXSIMILICENTER(BEVAN CIRCLE, SPIEKER CIRCLE)
The insimilicenter of the Bevan and Spieker circles is X9.
X1706 (EXSIMILICENTER(BEVAN CIRCLE, SPIEKER CIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
Constructed Elements
Central Lines: {4, 9}, {8, 57}
Related Centers: X4 (ORTHOCENTER), X9 (MITTENPUNKT), X8 (NAGEL POINT), X57 (ISOGONAL CONJUGATE OF X9)
Trilinears: \(f(a,b,c) : f(b,c,a) : f(c,a,b)\), where \(f(a,b,c) = bc[2(b + c) - a(\cos A - \cos B - \cos C + 1)]\)
Barycentrics: \(af(a,b,c) : bf(b,c,a) : cf(c,a,b)\)
Search Value (6, 9, 13): \(2.568656133707\)
Alternate Coordinates1 form
Trilinears: \(g(a,b,c) : g(b,c,a) : g(c,a,b)\), where \(g(a,b,c) = a^{3} + a^{2}(b + c) - a(b + c)^{2} - (b + c)(b^{2} - 6bc + c^{2})\)