A heptagon in Euclidean space is unable to make uniform tilings alongside other polygons, like the typical pentagon. On the other hand, it is one of fourteen polygons which can fill a airplane-vertex tiling, in its case only along with an everyday triangle in addition to a 42-sided polygon (3. https://senioraidtools.com/auvon-imedassist-7-day-pill-organizer-review/