## X(684) (CROSSDIFFERENCE OF X(4) AND X(32))

 Interactive Applet

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This applet was built with the free and multiplatform dynamic geometry software C.a.R..

 Information from Kimberling's Encyclopedia of Triangle Centers

Trilinears            f(A,B,C) : f(B,C,A) : f(C,A,B), where f(A,B,C) = sec B sin3 C - sec C sin3 B
Barycentrics    g(A,B,C) : g(B,C,A) : g(C,A,B), where g(A,B,C) = sin A f(A,B,C)

X(684) lies on these lines: 110,351    114,132    122,125    147,804    325,523    520,647    669,924

X(684) = isogonal conjugate of X(685)
X(684) = crosspoint of X(99) and X(287)
X(684) = crosssum of X(I) and X(J) for these (I,J): (98,879), (232,512)
X(684) = crossdifference of any two points on line X(4)X(32)

This is a joint work of
Humberto José Bortolossi, Lis Ingrid Roque Lopes Custódio and Suely Machado Meireles Dias.