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三角函數圖形
Author:
刘护灵
GeoGebra
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椭圆内切圆链
平行線的判定
常见四边形是否是双心四边形
双心四边形
活动三:应用性质
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分數減法
分數加減
畢氏定理證明(光華國中103資)
阿波羅尼奧斯圓
夜市麻將
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Translation
Cylinder
Limits
Incircle or Inscribed Circle
Mathematics