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长沙2019
Author:
谢鹏
GeoGebra
New Resources
平行線的判定
常见四边形是否是双心四边形
正方形雪花图案
第八周作业2
龙形曲线-分形龙2
Discover Resources
vector addition and subtraction
兩位數除法
Ex5C#5
包含除法（1 ÷分數）的副本
导数定义的动态演示.许兴华数学
Discover Topics
Symmetry
Linear Functions
Arithmetic Operations
Histogram
Parametric Curves