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Author:
周錦鋒
GeoGebra
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兩組對邊相等和有直角的四邊形
拼砌四邊形
近似值：有效數字
第八周作业
判斷球體
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兩位數除法
畢氏定理
創作一個相同周界的封閉平面圖形
人教A版3.1.3,空间向量的数量积分配律
S3 Ex4.3 Q05(3D圖)
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Interest Calculation
Derivative
Symmetry
Plane Figures or Shapes
Integers