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(984)
Barycentrics (y + z) tan A : (z + x) tan B : (x + y) tan C, x : y : z = X(984)
X(1890) lies on these lines:
4,9 7,34 25,1001 27,162 28,142 33,390 82,225 428,528 518,1829 751,1877 1445,1452 1724,1738 1737,1747X(1890) = X(29)-beth conjugate of X(1826)