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外心
Author:
cherry910502
GeoGebra
New Resources
柱體建築師
判斷球體
球體建築師
三位數除以一位數（二）
画直线等分三角形的面积
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task6
正四角錐(可以旋轉， 顯示邊， 選擇透視)
Geometric Solids: Recognize, Name and Sort
最佳解
公平的切蛋糕 Selfridge-Conway 免嫉妒分法(envy-free cake-cutting)
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Angles
Polygons
Parabola
Equilateral Triangles
Quadrilaterals