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Author:
johnmayhk
GeoGebra
New Resources
三位數除以一位數（二）
找出對稱軸
錐體建築師
画直线等分三角形的面积
判斷球體
Discover Resources
分割
Rotation
橢圓規Ellipsograph (Trammel of Archimedes)
描点法画三角函数图像
活工(三)Q2
Discover Topics
Random Variables
Parabola
Circle
Histogram
Equations