Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/guj/ Traduzione in Italiano del video Right Triangles Inscribed in Circles (Proof) http://www.youtube.com/watch?feature=player_embedded&v=b0U1NxbRU4w http://www.khanacademy.org/video/right-triangles-inscribed-in-circles--proof?playlist=Geometry