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Author:
lamanleung
GeoGebra
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四邊形的特性
兩組對邊相等的四邊形
柱體建築師
判斷球體
算柱 (兩位數)
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四心的變化II
優良作品3(昀潔)
Properties of a Rectangle
Copy of 閱讀鐘面及數字鐘（時和分）
三角函数y=sin(wx+b)的图象变换.许兴华数学
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Hypothesis Testing
Parallelogram
Bar Chart or Bar Graph
Circle
Tangent Line or Tangent