A heptagon in Euclidean Room is not able to crank out uniform tilings together with other polygons, such as regular pentagon. Even so, it is one of fourteen polygons which can fill a plane-vertex tiling, in its scenario only alongside a daily triangle along with a forty two-sided polygon (3. https://remingtonqadec.wikievia.com/10832639/facts_about_7_day_pill_organizers_revealed