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拋物線之極偶 / polarity for parabola
Author:
XIE Yuheng
GeoGebra
New Resources
漂亮的摇摆曲线
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
三位數除以一位數（一）
圓周公式的應用
Discover Resources
彈道
判斷三角形
容積盒子
美國隊長
reflection points
Discover Topics
Hyperbola
LCM and GCD
Right Triangles
Matrices
Differential Equation