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2019南京中考26
Author:
wss86303511
GeoGebra
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盈利與虧蝕
圓的切線方程
异形操场
平行線的判定
龙形曲线-分形龙
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比較3個分數大小
分割平行四邊形長方形
橢圓2-四圓心近似法
根據百分率找數量（一）: 例4的副本
三等分点连线围成的三角形特征（唐老师）
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Scalene Triangles
Plane Figures or Shapes
Equations
Surface
Isosceles Triangles