A heptagon in Euclidean space is not able to deliver uniform tilings together with other polygons, such as frequent pentagon. Nevertheless, it is one of fourteen polygons that can fill a plane-vertex tiling, in its circumstance only alongside an everyday triangle in addition to a forty two-sided polygon (3. Polynices https://7-day-pill-organizers33959.hyperionwiki.com/1712660/not_known_factual_statements_about_7_day_pill_organizers