A heptagon in Euclidean Area is unable to produce uniform tilings together with other polygons, much like the standard pentagon. However, it is one of fourteen polygons which will fill a aircraft-vertex tiling, in its circumstance only together with a regular triangle as well as a forty two-sided polygon (3. https://bathroom-grab-bars-for-el93323.bloggazzo.com/36710914/considerations-to-know-about-7-day-pill-organizers