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变形的正方形
Author:
梁文红
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
錐體建築師
找出對稱軸
四邉形 (四年級) 教師版
Discover Resources
線性組合
乘法
比較圖形大小3
畢氏三元數
範例二
Discover Topics
Functions
Power Functions
Solids or 3D Shapes
Straight Lines
Trigonometry