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李洲意
Author:
Lee Chew Yee
GeoGebra
New Resources
直線的斜率
【案例】2013年安徽高考15题
漂亮的摇摆曲线
空间中两直线的位置关系
球体的体积推导（优化版）
Discover Resources
S3 Probability
perimeter
Ex (SSS)
垂線作圖
正方形
Discover Topics
Surface
Fractal Geometry
Ratios
Geometric Mean
Geometric Transformations