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径向力守恒定律（几何作图）
Author:
趙文川
GeoGebra
New Resources
异形操场
折扣
斐波那契螺旋弧线（表格法-可动态调节）
斐波那契螺旋弧线（表格法）
龙形曲线-分形龙
Discover Resources
echen say
圖一
正五角柱
Multiplication of Directed Numbers
学用数学 S0
Discover Topics
Sphere
Similar Triangles
Cone
Tangent Function
Plane Figures or Shapes