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TRY_4.11.2016
Author:
Yeung Wing Ying
GeoGebra
New Resources
判斷球體
算柱 (兩位數)
柱體建築師
sanjiaohanshu
三位數除以一位數（一）
Discover Resources
畫過軌跡的面積
Lagrange
World's Second-Hardest Easy Geometry Problem
不規則圖形填入斜線
斜坡上的線與交角
Discover Topics
Surface
Circle
Polygons
Hyperbola
Pyramid