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robot-foot01
Author:
hann99
GeoGebra
New Resources
撒针估算面积实验
龙形曲线-分形龙2
活动三：应用性质
龙形曲线-分形龙
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
點光源圖
Centroid
三角柱
橢圓軌跡
平行四边形个数
Discover Topics
Circumcircle or Circumscribed Circle
Tangent Function
Binomial Distribution
Square
Triangles