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椭圆的两条垂直切线的交点轨迹
Author:
istone
Topic:
Ellipse
,
Geometric Transformations
GeoGebra
New Resources
正方形雪花图案
双心四边形
百分數及其應用
龙形曲线-分形龙2
垂直線的斜率
Discover Resources
平行四邊形
一階導函數
Copy of 七巧板
Shoplifting and theft histogram
滑轮组2
Discover Topics
Median Line
Orthocenter
Diagrams
Statistics
Parametric Curves