Patrick Vennebush, at his always-fun-blog Math Jokes for Mathy Folks, had this neat and pretty idea for a visualization of all the integer-length sided triangles. [url]http://mathjokes4mathyfolks.wordpress.com/2014/10/10/infinite-integer-triangles/[/url]

More GeoGebra at [url]bit.ly/mh-ggb[/url]