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GeoGebra
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轨迹20
Author:
万超杰
GeoGebra
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第八周作业
科氏力 (Coriolis Force)
双心四边形
撒针估算面积实验
圓的切線方程
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正四面體展開圖
試證明：A=B+C
圓面積與圓周長
正三角形
題五
Discover Topics
Sphere
Rectangle
Ellipse
Plane Figures or Shapes
Multiplication