This page is dying for an animation... You can take multiple gif's and compose them into an animated gif. There may even be free software online somewhere to do this. At 02:45 PM 6/20/03 -0700, Ed Pegg Jr wrote:

I was curious about how 800 different triangle centers moved around as the underlying triangle changed, so I generated lots of pictures. You can see them at http://www.mathpuzzle.com/TriCent/TriangleCenter.html . On my front page, I've added links to Kimberling's page, Weisstein's page, and a list of 2000 centers compiled by Edward Brisse.

--Ed Pegg Jr, http://www.mathpuzzle.com