Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vs/ Esercizi: http://www.khanacademy.org/exercise/similar_triangles_1 Traduzione in Italiano del video Similar triangles (part 2) http://www.youtube.com/watch?feature=player_embedded&v=qO2cTx6DwCA http://www.khanacademy.org/video/similar-triangles--part-2?playlist=Geometry Help us caption & translate this video! http://amara.org/v/B2vs/