In a triangle one can identify more remarkable points, called [b]triangle center[/b]. On [url=https://en.wikipedia.org/wiki/Triangle_center]list of triangle centers[/url] you can find the best known. The Amerikaanse mathemetician Clark Kimberling indexed more than 10 000 points identified by their [b]Kimberling number[/b]. [br]You can find this list online in the [url=http://faculty.evansville.edu/ck6/encyclopedia/ETC.html]encyclopedia of triangle centers[/url]. For every point you can find its barycentric coordinates. [br]If you know the Kimberling number of one of this points, you can draw it directly in GeoGebra with the command [b]TriangleCenter( Point , Point, Point, Nuber )[/b] in which you can type the coordinates or the names of the verticles of a triangle and the Kimberling nummer of the point.[br]The point with Kimberling number n is written as [b]X(n)[/b].