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点的轨迹为椭圆
Author:
东海1号
Topic:
Ellipse
GeoGebra
New Resources
兩位數除以一位數（二）
探究三角形的全等條件
圓的切線方程
漂亮的摇摆曲线
球体的体积推导
Discover Resources
長方形分割
sym1
梅花
初中数学
描点法画三角函数图像
Discover Topics
Perimeter
Exponent
Bar Chart or Bar Graph
Matrices
Centroid or Barycenter