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(7)
Barycentrics (y + z) tan A : (z + x) tan B : (x + y) tan C, x : y : z = X(7)
X(1827) lies on these lines: 4,7 19,25 46,1721 208,1887 294,1172 430,1856 1425,1547 1828,1843 1845,1905
X(1827) = crosspoint of X(4) and X(33)
X(1827) = crosssum of X(3) and X(77)