Angoli Formati da Rette Parallele e una Trasversale

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vo/ Esercizi: http://www.khanacademy.org/exercise/corresponding_angles Traduzione in Italiano del video Angles formed between transversals and parallel lines http://www.youtube.com/watch?feature=player_embedded&v=gRKZaojKeP0 http://www.khanacademy.org/video/angles-formed-between-transversals-and-parallel-lines?playlist=Geometry Help us caption & translate this video! http://amara.org/v/B2vo/