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线段最值基本图形
Author:
王巍
GeoGebra
New Resources
平行線的斜率
常见四边形是否是双心四边形
祖冲之的期望：内棋与外棋
球体的体积推导（优化版）
【案例】2013年安徽高考15题
Discover Resources
方格紙上畫長方形1
Polygon Activity
車線.ggb
Single Line Deflection
P6 圓周01B
Discover Topics
Square
Probability
Expected Value
Real Numbers
Arithmetic Mean