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SWC 4 centres in a triangle
Author:
hksiusir
GeoGebra
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龙形曲线-分形龙2
双心四边形
正方形雪花图案
撒针估算面积实验
圓的基本性質
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有趣的反例
总5第五题
gjh-f01-00 最短距離與對稱點
CircleIII
小游戏
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Trapezoid
Parabola
Cuboid
Symmetry
Geometry