regular English English English regular polygons Regular polygon English regular polygons regular English English English English English English چند ضلعی منتظم ویکی پدیا regular polygon regular polygons regular polygons regular polygons English English regular polygon The regular polygons' names English English English English regular polygons English English regular polygons equiangular regular convex polygon Wikipedia 上的條目 English regular polygon regular 2D polygon regular regular de p -gon regular regular regular polygons regular polygon regular regular polygons regular The regular polygons' names regular polygons regular polygons English Regular regular polygon English regular regular polygons English p-gon https://en.wikipedia.org/wiki/Regular_polygon English English polygon five-sided regular polygon English English regular polygons English English regular shape regular polygon regular polygons regular polygon English