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Author:
夏天
随便做做
GeoGebra
New Resources
畫出對稱圖形
球體建築師
算柱 (兩位數)
三位數除以一位數（二）
画直线等分三角形的面积
Discover Resources
齒輪連接的方法與轉動。
test
test
C60足球模型（弧线）
Completing the Square (Part 3)
Discover Topics
Tangent Line or Tangent
Cylinder
Curve Sketching
Geometry
Poisson Distribution