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圆在圆上/内滚动
Author:
Sylvie
GeoGebra
New Resources
斐波那契螺旋弧线(表格法)
平行線的判定
龙形曲线-分形龙
龙形曲线-分形龙2
椭圆内切圆链
Discover Resources
淨敗場數機率棋盤圖
認識公里
other
GGB多页面案例
滑桿2
Discover Topics
Curve Sketching
Rotation
Definite Integral
Coordinates
Probability