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拋物線5-包絡線法
Author:
15黃瀚霆
GeoGebra
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【案例】2013年安徽高考15题
算柱 (兩位數)
三位數除以一位數（一）
畫出對稱圖形
判斷球體
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永春高中研習
三圓外切2
串珠(大小不同)
圓錐截面曲線
函數
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Functions
Circumcircle or Circumscribed Circle
Orthocenter
Trigonometry
Cylinder