## X(243) (X(4)-LINE CONJUGATE OF X(73))

 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 A)(cos2A - cos B cos C)
Barycentrics    (sin A)f(A,B,C) : (sin B)f(B,C,A) : (sin C)f(C,A,B)

X(243) lies on these lines: 1,4    3,158    55,92    65,412    318,958    411,821    425,662    522,652    920,1075    1040,1096

X(243) = isogonal conjugate of X(296)
X(243) = crossdifference of any two points on line X(73)X(652)
X(243) = X(I)-Hirst inverse of X(J) for these (I,J): (1,4), (46,1148)
X(243) = X(1)-line conjugate of X(73)

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