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拋物線之極偶 / polarity for parabola
Author:
XIE Yuheng
GeoGebra
New Resources
算柱 (兩位數)
兩位數除以一位數（一）
錐體建築師
兩組對邊相等和有直角的四邊形
四邊形的特性
Discover Resources
f(x) and -f(x)
阴影部分例子
双曲线和直线的位置关系
函數平移
圆的面积展开的副本
Discover Topics
Coordinates
Isosceles Triangles
Difference and Slope
Conic Sections
Scalene Triangles