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S1 Ex9.2 Q17
Author:
lamanleung
GeoGebra
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龙形曲线-分形龙2
祖冲之的期望：内棋与外棋
平行線的斜率
双心四边形
折扣
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九點圓的真正面貌
由線段與弧構成的封閉區域填色
正多面體
中華民國國旗
爱心
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Equations
General Quadrilateral
Incircle or Inscribed Circle
Variance
Terms