[b][b][/b][/b]يرجي مراجعة eemaree1 &eemaree2 & ابراهيم مرعي http://tube.geogebra.org/user/profile/id/8172?lang=ar eeemaree@gmail.com Dedicated to all those interested in mathematics, this is a collection It is one of the branches of mathematics, perhaps it will be useful knowledge for us Ibrahim Ibrahim Marei New Damietta - Damietta - Egypt +201017174320