@christianp @JimPropp I don’t know about rules, but the tiling on the left seems to have a clear structure. If colour is ignored, it has rotational symmetry of order 2. In fact, it’s as if the tiling on the right has been copied, split and filled with a horizontal band of two pentagons and two rhombuses. The tiling on the right was known by Dürer https://plus.maths.org/content/trouble-five and https://mathstodon.xyz/@foldworks/112711074311119074. #TilingTuesday #tiling #geometry #mathematics