A heptagon in Euclidean House is not able to crank out uniform tilings together with other polygons, similar to the common pentagon. Having said that, it is one of fourteen polygons that can fill a plane-vertex tiling, in its case only together with a regular triangle plus a 42-sided polygon https://mobility-exercises-for-se45588.ourabilitywiki.com/10324321/a_secret_weapon_for_7_day_pill_organizers