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橢圓動畫
Author:
chen mingchuan
GeoGebra
New Resources
判斷球體
畫出對稱圖形
柱體建築師
算柱 (兩位數)
兩位數除以一位數（一）
Discover Resources
煞車
立體圖形
三角形的面積
除法
線的面化
Discover Topics
Division
Plane Figures or Shapes
Secant Line or Secant
Linear Programming or Linear Optimization
Intersection