A heptagon in Euclidean Area is struggling to produce uniform tilings together with other polygons, similar to the normal pentagon. On the other hand, it is among fourteen polygons that can fill a plane-vertex tiling, in its case only together with a regular triangle along with a 42-sided polygon (3. https://non-slipslippersforelderl96049.mybuzzblog.com/17721084/the-greatest-guide-to-7-day-pill-organizers