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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
算柱 (兩位數)
兩位數除以一位數（二）
異分母分數減法
四邊形的特性
畫出對稱圖形
Discover Resources
Locus 軌跡(6)
折線軌跡
Copy of 多項式函數
小立方体组合的三视图【鼠标拖动法】
活工(二)Q3
Discover Topics
Similarity Transformation or Similarity
Interest Calculation
Distributions
Unit Circle
Random Variables