A heptagon in Euclidean space is unable to create uniform tilings alongside other polygons, similar to the regular pentagon. Having said that, it is one of fourteen polygons which can fill a airplane-vertex tiling, in its situation only along with a daily triangle in addition to a 42-sided polygon (3. https://cashriwiu.theisblog.com/38105451/the-5-second-trick-for-7-day-pill-organizers