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橢圓之極偶 / polarity for ellipse
Author:
XIE Yuheng
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
異分母分數減法
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
Discover Resources
畢氏定理(五移動)
假的龍珠
初中函数
橢圓代數性質,光學性質,生活應用
倍數
Discover Topics
Interest Calculation
Standard Deviation
Linear Programming or Linear Optimization
Median Value
Continuity