21-gon
21-gon · 21-gons
двадцятиоднокутник
двадцатиодноугольник
Einundzwanzigeck
Synonym of icosihenagon: A polygon with twenty-one edges and twenty-one anglesSynonym of icosihenagon: A polygon with twenty-one edges and twenty-one angles.
Synonym of icosihenagon: A polygon with twenty-one edges and twenty-one anglesSynonym of icosihenagon: A polygon with twenty-one edges and twenty-one angles.