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proof 64 潘研
Author:
郭亮偉
GeoGebra
New Resources
拼砌四邊形
算柱 (兩位數)
判斷球體
球体的体积推导（优化版）
球體建築師
Discover Resources
正四面體展開圖
zztest
任意三角形
拋物線有範圍限制的極值
圆的有关概念
Discover Topics
Translation
Special Points
Inequalities
Perimeter
Natural Numbers