Nombre original: 直角二等辺三角形TOUR
Fecha de estreno: 13 de enero de 2010
Película
Tiempo promedio: 113 minutos
Géneros: Musica
Sinopsis: Chokkaku Nitouhen Sankakkei TOUR is the fourth live DVD released by Perfume. The tour was used to support and promote the release of their third album (second studio album) ⊿