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Triangle_7_Q
Author:
ralphchen
GeoGebra
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平行線的判定
椭圆内切圆链
比較五件物件的重量
斐波那契螺旋弧线(表格法-可动态调节)
科赫雪花
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第一組
P6數學
tttttrr
金惠吉:三维李萨如
平移圖形後計算面積
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Parametric Curves
Planes
Symmetry
Special Points
Ellipse