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外心

Author:Jensen Wong

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直角坐標平面上的旋轉變換
四邊形的特性
sanjiaohanshu
拼砌四邊形
兩組對邊相等的四邊形

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waaachen
正七邊形
角度比較
P4菱形定義
中位线的副本

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Mathematics
Volume
Centroid or Barycenter
Differential Calculus
Sine

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