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重心
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cherry910502
GeoGebra
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sanjiaohanshu
小数 的副本
【案例】2013年安徽高考15题
畫出對稱圖形
錐體建築師
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三角形外心
銀杏葉
圖形周界_F
多邊形陣列
面積趣味題
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Geometry
Geometric Mean
Histogram
Arithmetic Operations
Geometric Transformations