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Author:
朱亮
Topic:
Combinatorics
,
Numbers
GeoGebra
New Resources
判斷球體
球体的体积推导（优化版）
兩位數加法
【案例】2013年安徽高考15题
異分母分數減法
Discover Resources
有向角
分段函數
軌跡
認識半徑
三角形重心的变化.许兴华数学
Discover Topics
Difference and Slope
Optimization Problems
Multiplication
Coordinates
Vectors 3D (Three-Dimensional)