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正方形雪花图案
Author:
孟宝兴
GeoGebra
New Resources
兩位數加法
畫出對稱圖形
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
Discover Resources
Polygon Activity
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
gtx-f03-vietnam-01 越南國旗
雙曲線的定義
二元线性规划的图解法(18.2 例5)
Discover Topics
Standard Deviation
Quadratic Equations
Bar Chart or Bar Graph
Rectangle
Circumcircle or Circumscribed Circle