A heptagon in Euclidean space is unable to generate uniform tilings together with other polygons, much like the frequent pentagon. On the other hand, it is one of fourteen polygons that could fill a aircraft-vertex tiling, in its case only together with an everyday triangle plus a 42-sided polygon (three. https://senioraidtools.com/10-easy-mobility-exercises-for-seniors-to-stay-active-and-independent/