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,
= 5 cos A + 2 cos B cos C : 5 cos B + 2 cos C cos A : 5 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(549) lies on the Euler line. (Antreas Hatzipolakis, 1/20/00, Hyacinthos #201)
X(549) lies on these lines: 2,3 15,395 16,396 35,496 36,495 141,542 182,524 230,574 302,617 303,616 511,597 517,551
X(549) = midpoint of X(I) and X(J) for these (I,J): (2,140), (5,2), (381,547)
X(549) = reflection of X(I) in X(J) for these (I,J): (14,619), (148,13), (616,99), (622,299)
X(549) = complement of X(381)
X(549) = anticomplement of X(547)