Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vz/ Esercizi: http://www.khanacademy.org/exercise/pythagorean_theorem_2 Traduzione in Italiano del video 45-45-90 Triangles http://www.youtube.com/watch?feature=player_embedded&v=tSHitjFIjd8 http://www.khanacademy.org/video/45-45-90-triangles?playlist=Geometry Help us caption & translate this video! http://amara.org/v/B2vz/