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Author:
袁智强
GeoGebra
New Resources
科赫雪花
中华人民共和国国旗
科氏力 (Coriolis Force)
异形操场
斐波那契螺旋弧线（表格法-可动态调节）
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從 12 面體、20 面體到 C60 C80
Spiral Polyskelion
用方程解周界問題
畢氏定理
高中二年級平面向量的副本
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Vectors 2D (Two-Dimensional)
Derivative
Pyramid
Area
Surface