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球體建築師
柱體建築師
GeoGebra笔记功能体验课件
找出對稱軸
第八周作业
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happy new year2
平面切割正立方體
椭圆的定义
內擺線
极坐标系
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Multiplication
Equilateral Triangles
Conditional Probability
Rectangle
Linear Equations