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sym1
Author:
Kwok Man Fai
GeoGebra
New Resources
比較五件物件的重量
活动三：应用性质
龙形曲线-分形龙
撒针估算面积实验
龙形曲线-分形龙2
Discover Resources
凸透鏡成像
閱讀鐘面及數字鐘（時和分）
ActIVIDAD 2.2
和两个圆都相切的圆
属于与不属于
Discover Topics
Median Line
Fractal Geometry
Secant Line or Secant
Set Theory
Variance