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橢圓的定義
Author:
luke huang
GeoGebra
New Resources
球體建築師
算柱 (兩位數)
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩位數加法
Discover Resources
給柱體一個名字 3
橢圓動畫
Heat Sink Fin
例题1
二次函数y=ax²（a＞0)
Discover Topics
Variance
Geometry
Parametric Curves
Unit Circle
Cone