X630¶
COMPLEMENT OF X18
X630 (COMPLEMENT OF X18) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
Constructed Elements
Central Lines: {18, 628}
Related Centers: X18 (2nd NAPOLEON POINT), X628 (ANTICOMPLEMENT OF X18)
Trilinears: \(f(a,b,c) : f(b,c,a) : f(c,a,b)\), where \(f(a,b,c) = [6S_{B}S_{C} + 7S_{A}a^{2} - 2 \sqrt{3} (b^{2} + c^{2}) \operatorname{area}]/a\)
Barycentrics: \(g(a,b,c) : g(b,c,a) : g(c,a,b)\), where \(g(a,b,c) = af(a,b,c)\)
Search Value (6, 9, 13): \(12.084390187622\)
Alternate Coordinates1 form
Trilinears: \(F(18)/a + \sec(A + \pi /3) : F(18)/b + \sec(B + \pi /3) : F(18)/c + \sec(C + \pi /3)\)