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Author:
chen mingchuan
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等的四邊形
兩位數加法
異分母分數減法
画直线等分三角形的面积
Discover Resources
鉛筆的長度
畢氏定理證明
兩外切圓之外公切線作圖法
o'clcok
ghseh 二次函數的開口方向
Discover Topics
Linear Functions
Quadrilaterals
Matrices
Normal Distribution
Square