Nome original: 直角二等辺三角形TOUR
Data de lançamento: 13 de janeiro de 2010
Filme
Tempo médio: 113 minutos
Gêneros: Música
Sinopse: 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) ⊿