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Uploaded by liveism on Jun 20, 2011
Live免費線上示範教學國中數學第五冊§第一章_比例線段與相似形※1-1 比例線段【觀念】(3)梯形兩對角線連線所形成的三角形面積比【Live數位國中數學】發行名師『葛倫(Galen)』錄製更多更棒的內容請至Live數位國中數學網站http://liveism.com
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