[中學] 請問一題國中數學問題
http://www.wretch.cc/album/show.php?i=lmju1982&b=2&f=1198052914&p=0
題目如上
矩形ABDC AC長15 AB長12
以A為圓心 AB為半徑畫弧
以D為圓心 CD為半徑畫弧
連接兩弧交點延長線交AC於E
請問三角形CDE面積為何?
個人思考許久找不出關係式可解出CE長度 懇請各位版友不吝指教 謝謝!
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