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折叠问题一例
Author:
孟宝兴
GeoGebra
New Resources
直角坐標平面上的旋轉變換
找出對稱軸
第八周作业
三位數除以一位數（二）
畫出對稱圖形
Discover Resources
不規則圖形的周界(step3)
迭帶
對稱圖形
时钟（序列文本）
Copy of Multiplication of polynomials 2 (多項式的乘法 2)
Discover Topics
Boxplot
Arithmetic
Prism
Poisson Distribution
Centroid or Barycenter