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 f(A,B,C) : f(B,C,A) : f(C,A,B), where f(A,B,C) = cos(B - C) + sin(A + ω)
Trilinears h(A,B,C) : h(B,C,A): h(C,A,B), where h(A,B,C) = csc(A - ω/2 + π/4) (M. Iliev, 5/13/07)
Barycentrics (sin A)f(A,B,C) : (sin B)f(B,C,A) : (sin C)f(C,A,B)
X(2009) lies on these lines:
2,1689 4,1690 5,39 10,2020 11,2007 12,2008 83,1688 98,1687 485,1670 486,1671 1346,2016 1347,2015 1348,2012 1349,2011 1698,2018 1699,2017 2026,2040 2027,2039
X(2009) = reflection of X(2010) in X(115)
X(2009) = isogonal conjugate of X(1687)