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两次折叠
Author:
谢鹏
GeoGebra
New Resources
直角坐標平面上的旋轉變換
畫出對稱圖形
三位數除以一位數（二）
找出對稱軸
柱體建築師
Discover Resources
locus wrt two pts on two indep. circle
不規則多邊形塗色
滑桿動畫2-4:畢氏定理
整数乘法演示
兩組對邊相等的四邊形（三年級）
Discover Topics
Similar Triangles
Mathematics
Optimization Problems
Geometry
Circumcircle or Circumscribed Circle