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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
兩位數加法
兩組對邊相等的四邊形
判斷球體
画直线等分三角形的面积
異分母分數減法
Discover Resources
多項式函數
分數認識
Hamid Naderi Yeganeh segment3
分数的乘法
单叶双曲面-双叶双曲面
Discover Topics
Plane Figures or Shapes
Arithmetic
Constructions
Algebra
Linear Equations