A heptagon in Euclidean Place is struggling to crank out uniform tilings along with other polygons, such as the frequent pentagon. However, it is one of fourteen polygons that may fill a plane-vertex tiling, in its case only together with a daily triangle in addition to a 42-sided polygon (3. https://7-day-pill-organizers10628.yomoblog.com/45066168/the-5-second-trick-for-7-day-pill-organizers 
