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peacock2
Author:
李春培
peacock2
GeoGebra
New Resources
正方形雪花图案
中华人民共和国国旗
椭圆内切圆链
龙形曲线-分形龙
斐波那契螺旋弧线(表格法)
Discover Resources
集合運算
菱形有甚麼特性?
尺規作圖平分一個角
MY first GGBBook
任意凸多边形的滚动
Discover Topics
Fractions
Means
Straight Lines
Upper and Lower Sum or Riemann Sum
Linear Equations