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Author:
philiplui
GeoGebra
New Resources
找出對稱軸
判斷球體
拼砌四邊形
三位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
cos, sin 與單位圓
國旗
錯角---水平平行綫
勒洛三角形頂點C軌跡
整數
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Translation
Orthocenter
Power Functions
Pyramid
Special Points