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 , select the center name from the list and, then, click on the vertices A, B and C successively.
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(1478)
Barycentrics (y + z) tan A : (z + x) tan B : (x + y) tan C, x : y : z = X(1478)
X(1905) lies on these lines:
1,25 3,1452 4,65 33,517 34,222 46,1593 52,1866 169,607 225,1831 354,1870 378,1155 406,960 427,1737 1426,1838 1478,1892 1730,1735 1770,1885 1785,1824 1825,1872 1827,1845 1828,1844X(1905) = reflection of X(222) in X(942)
X(1905) = crosspoint of X(4) and X(1061)
X(1905) = crosssum of X(3) and X(1060)