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Author:
军云
GeoGebra
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比較五件物件的重量
第八周作业3
椭圆内切圆链
镂空正方体案例对比
平行線的判定
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正方形的旋轉
根據百分率找數量(二): 例1
畢氏定理動態證明(四塊直角三角形移動)
餘弦函數 y=Cos(x)
運用量角器量度以下角度
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Inequalities
Reflection
Vectors
Special Points
Isosceles Triangles