Polygon is a multi-purpose hall for Jeonnam Arts High School, supporting students’ physical education, performing arts and community. The school is naturally accompanied by the surrounding mountains and is shaped as if it carries nature, and the interior and exterior of the building are characterized by continuity. The architecture was designed to meet a variety of needs. The walls connecting the inside and outside can be opened at the front, and the outside auditorium is connected to the inner auditorium and one space, if necessary, to accommodate the role of the audience on the second floor.