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橢圓的定義畫圖
Author:
SUN YUNG CHANG
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
Discover Resources
经纬度
角平分線-1
Diagram 1
ROC國徽1060310
球表面积的一种特殊推导
Discover Topics
Pythagoras or Pythagorean Theorem
Reflection
Ellipse
Rational Numbers
Probability