[解題] 國二等腰梯形求面積問題
1.年級:國二
2.科目:數學
3.章節:第四冊
4.題目:等腰梯形ABCD中,AB平行CD,AD=BC,上底AB=18,AC=CD=30,求梯形面積
http://i.imgur.com/OvXpwMj.jpg
5.想法:從詳解看,答案是432,所以作弊回推高為18,但仍不知過程
朋友只覺得可能會跟全等性質有關
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※ 編輯: delvan (1.162.122.173), 06/20/2017 19:43:15
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