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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
判斷球體
兩位數除以一位數（一）
画直线等分三角形的面积
三位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
HKCEE-AM 2010 Q17 additional part
對稱之美
Copy of cos(x) 的圖形
洋葱中考视频
多点联动
Discover Topics
Frequency Distribution
Similarity Transformation or Similarity
Parametric Curves
Quadrilaterals
Surface