[...] In order to be Certifiable for Classroom Use, along with the link, the text might say something like "tripling the boundary *while preserving the shape* of a 2-dimensional figure". And label the diagrams "Triangle", "Square" and "Franceflake" (except you can't seem to goog on the later, tsk tsk). No problem. All the little kiddies have to do is type https://www.google.com/search?q=flowsnake+boundary&source=lnms&tbm=isch&sa=X... --rwg