Le Aree dei Triangoli Generati dalle Diagonali in un Rettangolo Sono Uguali

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vU/ Traduzione in Italiano del video Area of Diagonal Generated Triangles of Rectangle are Equal http://www.youtube.com/watch?feature=player_embedded&v=YTRimTJ5nX4 http://www.khanacademy.org/video/area-of-diagonal-generated-triangles-of-rectangle-are-equal?playlist=Geometry