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圓錐切球
Author:
賴鍵維
GeoGebra
New Resources
找出對稱軸
畫出對稱圖形
拼砌四邊形
三位數除以一位數（一）
第八周作业
Discover Resources
應用題解題法
畢氏定理動畫
向量求和动画演示
Copy of 和差角公式几何证明
蝴蝶定理（唐老师的课程）
Discover Topics
Centroid or Barycenter
Square
Constructions
Linear Equations
Equilateral Triangles