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(774)
Barycentrics (y + z) tan A : (z + x) tan B : (x + y) tan C, x : y : z = X(774)
X(1885) lies on these lines: 2,3 64,1899 389,974 497,1398 515,1902 516,1829 950,1876 1039,1721 1770,1905
X(1885) = crosspoint of X(4) and X(1105)
X(1885) = crosssum of X(3) and X(185)