A heptagon in Euclidean Room is unable to make uniform tilings alongside other polygons, similar to the typical pentagon. Having said that, it is one of fourteen polygons which will fill a plane-vertex tiling, in its situation only together with a daily triangle in addition to a 42-sided polygon (3. https://codycyujr.blogsumer.com/36857156/the-5-second-trick-for-7-day-pill-organizers