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正二十面体
Author:
fumiao1119
GeoGebra
New Resources
直角坐標平面上的旋轉變換
近似值：有效數字
國旗 (Claude 版)
世界平面地圖 (Codex╱2026.10.07)
sanjiaohanshu
Discover Resources
反餘弦函數
周界
Angle Between Two Planes Definition 平面與平面間之交角 定義
了解圓方程(2)的副本
割圆术估计圆周率（刘徽）
Discover Topics
Means
Cube
Dilation
General Quadrilateral
Complex Numbers