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Pentacle
Author:
Jianqiang He
GeoGebra
New Resources
四邊形的特性
Earth with coastline
找出對稱軸
國旗 (Claude 版)
近似值：有效數字
Discover Resources
simson line
雙曲柄
共垂心
椭圆两个焦点与椭圆上点的连线
黎曼和(Riemann Sum)
Discover Topics
Indefinite Integral
Geometric Transformations
Statistical Characteristics
Planes
Stochastic Process or Random Process