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對摺平行四邊形
Author:
hingchan
GeoGebra
New Resources
異分母分數減法
錐體建築師
找出對稱軸
柱體建築師
球体的体积推导（优化版）
Discover Resources
GeoGebra作圖─ＡＡＳ全等
畢氏定理3
題1
龜甲
三角形
Discover Topics
Symmetry
Rectangle
Vectors 2D (Two-Dimensional)
General Quadrilateral
Natural Numbers