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动态专题—角度旋转
Author:
刘元平
GeoGebra
New Resources
拼砌四邊形
球体的体积推导（优化版）
兩位數加法
兩組對邊相等的四邊形
畫出對稱圖形
Discover Resources
判斷錐體 2
會動的函數圖形
翻轉方塊(雙開)
外心垂心問題
卓蘭高中
Discover Topics
Geometric Mean
Correlation
Vectors 3D (Three-Dimensional)
Straight Lines
Vectors