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正方形雪花图案
Author:
孟宝兴
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
直角坐標平面上的旋轉變換
找出對稱軸
四邊形的特性
Discover Resources
直方圖_Demo
找规律（数阵与点阵）
第四組-圓冪定理
Light reflected in hyperbola
碎形四邊形
Discover Topics
Line Segment
Hyperbola
Symmetry
Sequences and Series
Pyramid