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期中時鐘
Author:
林海青
GeoGebra
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中华人民共和国国旗
平行線的判定
龙形曲线-分形龙
斐波那契螺旋弧线(表格法-可动态调节)
斐波那契螺旋弧线(表格法)
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畢氏定理的證明
方格紙上畫長方形1
三角函數的性質
EX11圖形8
和直线和圆同时相切的圆
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Equations
General Quadrilateral
Translation
Rectangle
Incircle or Inscribed Circle