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Author:
tao sun
GeoGebra
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撒针估算面积实验
双心四边形
第八周作业3
折扣
第八周作业2
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恭喜發財,土地公籤詩
展開圖折合遊戲
圆锥曲线的第二定义
棒形圖編輯(修改版)
三角函數的描點與圖形
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Rectangle
Ellipse
Pyramid
Cosine
Pythagoras or Pythagorean Theorem