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

X(1880)
(ZOSMA TRANSFORM OF X(573))


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           (y + z) sec A : (z + x) sec B : (x + y) sec C,    x : y : z = X(573)
Barycentrics    (y + z) tan A : (z + x) tan B : (x + y) tan C,    x : y : z = X(573)

X(1880) lies on these lines:
2,92    4,941    6,19    12,37    25,1096    28,961    42,1824    57,967    108,111    331,1218    1171,1396    1254,1400    1411,1474    1722,1723    1735,1765    1839,1877

X(1880) = isogonal conjugate of X(1812)
X(1880) = X(I)-Ceva conjugate of X(J) for these (I,J): (19,1400), (225,1824), (278,225)
X(1880) = crosspoint of X(I) and X(J) for these (I,J): (19,393), (34,278)
X(1880) = crosssum of X(I) and X(J) for these (I,J): (63,394), (78,219)

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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