1.年級:國中資優 三角型面積
2.科目:數學
3.章節:三角形面積
4.題目:有圖型
http://www.wretch.cc/album/show.php?i=clarins&b=111&f=1686398263&p=39
5.想法:面積=1/2底x高,高不就是斜邊長24*1/2,這個也有用到三角函數
到底怎樣算法是完全不用到畢氏定理,三角函數的?
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