This is inspired by [url=https://twitter.com/Anniekperkins/status/983839592204906497]another tiling[/url] from Annie Perkins. Paula Beardell Krieg posted [url=https://twitter.com/PaulaKrieg/status/986688492821508097]a precisely made version[/url], that made me finally make an applet to play with the symmetry for any quadrilateral. (And educated me as to a proper name for it.) It turns out that you can make several different classic tilings.