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椭圆的定义
Author:
1012462123
,
邹丽华
GeoGebra
New Resources
畫出對稱圖形
拼砌四邊形
兩位數加法
判斷球體
三位數除以一位數（一）
Discover Resources
trigo ratios np2c
數據分析2
線性規劃
三角函数求值 （单位圆、比值）
平行四边形
Discover Topics
Parallelogram
Square
Power Functions
Probability
Similar Triangles