Parte 1 della Dimostrazione della Formula di Erone

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2wE/ Esercizi: http://www.khanacademy.org/exercise/herons_formula Traduzione in Italiano del video Part 1 of Proof of Heron's Formula http://www.youtube.com/watch?feature=player_embedded&v=AreOMvPCxv8 http://www.khanacademy.org/video/part-1-of-proof-of-heron-s-formula?playlist=Geometry Help us caption & translate this video! http://amara.org/v/B2wE/