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雙曲線之極偶 / polarity for hyperbola
Author:
XIE Yuheng
GeoGebra
New Resources
異分母分數減法
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
Discover Resources
梯形
算法复杂度函数
三角形面積
Orthographic Views 1
绕圆旋转004
Discover Topics
Volume
Distributions
Standard Deviation
Reflection
Complex Numbers