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繪製平行四邊形
Author:
均一
GeoGebra
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球体的体积推导
三位數除以一位數（一）
画直线等分三角形的面积
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
分數減法
密铺图形
畢氏定理圖證01
Copy of 分數認識
光圈与正多边形外角和
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Optimization Problems
Conic Sections
Tree Diagrams
Perimeter
Diagrams