A heptagon in Euclidean space is not able to generate uniform tilings together with other polygons, similar to the standard pentagon. Nonetheless, it is among fourteen polygons which can fill a aircraft-vertex tiling, in its case only together with a daily triangle in addition to a forty two-sided polygon (3. https://israelhzmal.blog2freedom.com/37858941/7-day-pill-organizers-fundamentals-explained