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拋物線
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fu0 fu6
GeoGebra
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龙形曲线-分形龙2
科赫雪花
正方形雪花图案
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
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內外角平分線
sin(x)0-720
橢圓包絡線
GGB DAY3
金惠吉：三维李萨如
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Distributions
Trigonometric Functions
Congruence
Triangles
Trigonometry