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2-1-2-a
Author:
Joye Wang
GeoGebra
New Resources
平行線的判定
百分數及其應用
折扣
撒针估算面积实验
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
Is this a prism 11
Area of triangle with different base
旁心
圖形的周界
光的折射
Discover Topics
Multiplication
Geometric Transformations
Centroid or Barycenter
Cuboid
Triangles