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内凹的正方形
Author:
叶明杰
GeoGebra
New Resources
三位數除以一位數（二）
柱體建築師
兩組對邊相等的四邊形
画直线等分三角形的面积
異分母分數減法
Discover Resources
認識小數
齊來製作對稱圖
Quiz on Scientific Notation
动态专题—角度旋转
Copy of 離心率與圓錐曲線
Discover Topics
Geometry
Distributions
Correlation
Cylinder
Expected Value