Skolko uglov ravnix60 gradusov i imeyushix obshuyu vershiny i obshie s sosedyami storoni...

Question

Skolko uglov ravnix60 gradusov i imeyushix obshuyu vershiny i obshie s sosedyami storoni mojno postroic?

Answer 1

Чпчспрамрипвапрроьнгрычсмррм