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Properties of a Square
Author:
Lttcmooc
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等的四邊形
三位數除以一位數（二）
四邊形的特性
柱體建築師
Discover Resources
waaachen
包絡線2
周界(移邊)
繡曲線01
九九乘法表
Discover Topics
Cylinder
Vectors 3D (Three-Dimensional)
Similarity Transformation or Similarity
Arithmetic Mean
Triangles