HJB --- GMA --- UFF


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: (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           cos A cot A : cos B cot B : cos C cot C
Barycentrics    cos2A : cos2B : cos2C

X(394) lies on these lines: 2,6    3,49    20,1032    22,110    25,511    63,77    72,1060    76,275    78,271    287,305    297,315    329,651    393,837    399,541    470,633    471,634    472,622    473,621    611,612    613,614    1062,1069

X(394) = X(69)-Ceva conjugate of X(3)
X(394) = crosspoint of X(493) and X(494)
X(394) = crosssum of X(4) and X(459)
X(394) = crossdifference of any two points on line X(460)X(512)

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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