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) + 4 cos A,
= 3 cos A - 2 cos B cos C : 3 cos B - 2 cos C cos A : 3 cos C - 2 cos A cos B
Barycentrics (sin A)f(A,B,C) : (sin B)f(B,C,A) : (sin C)f(C,A,B)
X(550) lies on the Euler line. (Antreas Hatzipolakis, 1/20/00, Hyacinthos #201)
X(550) lies on these lines: 2,3 15,397 16,398 35,495 36,496 40,952 74,930 156,1092 165,355
X(550) = midpoint of X(3) and X(20)
X(550) = reflection of X(I) in X(J) for these (I,J): (3,548), (4,140), (5,3), (382,546)
X(550) = complement of X(382)
X(550) = anticomplement of X(546)