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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题
拼砌四邊形
三位數除以一位數（二）
異分母分數減法
Discover Resources
Angles at the same segment
平行四邊形變奏II
正多邊形收斂
Statistical calculator 2
Copy of sin(x) 的函數圖形
Discover Topics
Circumcircle or Circumscribed Circle
Standard Deviation
Random Experiments
Plane Figures or Shapes
Histogram