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光折射
Author:
kevin20020905
GeoGebra
New Resources
四邉形 (四年級) 教師版
画直线等分三角形的面积
畫出對稱圖形
三位數除以一位數（一）
第八周作业
Discover Resources
畢氏定理
數值滑桿
Triangle
Internal tangent
判斷球體
Discover Topics
Polynomial Functions
Tangent Line or Tangent
Random Variables
Incircle or Inscribed Circle
Arithmetic Mean