INSTITUTO DE MATEMÁTICA
HJB --- GMA --- UFF

X(2643)
(DIFFERENCE OF PU(79))


Click here to access the list of all triangle centers.

Interactive Applet

You can move the points A, B and C (click on the point and drag it).
Press the keys “+” and “−” to zoom in or zoom out the visualization window and use the arrow keys to translate it.

You can also construct all centers related with this one (as described in ETC) using the “Run Macro Tool”. To do this, click on the icon Run Macro Tool, select the center name from the list and, then, click on the vertices A, B and C successively.

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Download all construction files and macros: tc.zip (10.1 Mb).
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) = 1/(cot C - cot A) - 1/(cot B - cot A)
Trilinears           f(a,b,c) : f(b,c,a) : f(c,a,b), where f(a,b,c) = (b2 - c2)2       (M. Iliev, 5/13/07)

Barycentrics    (sin A)f(A,B,C) : (sin B)f(B,C,A) : (sin C)f(C,A,B)

X(2643) lies on these lines: 1,662    19,560    31,2153    37,2054    65,2652    75,1581    244,2611    267,849    523,1086    678,1962    872,2171    922,2173    1098,1247    1109,2632    1580,2244    1953,1964    1959,2234    1931,2641

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

If you have questions or suggestions, please, contact us using the e-mail presented here.

Departamento de Matemática Aplicada -- Instituto de Matemática -- Universidade Federal Fluminense



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