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Perimeter

Author:Ting Chui Yee, Anthony OR 柯志明, Angela Yan

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找出對稱軸
兩組對邊相等的四邊形
sanjiaohanshu
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形

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Division Algorithm 除法算法
Copy of 包含除法（1 ÷分數）
-1/8 ≤ cosα cosβ cosγ ≤ 1
描点法绘制函数图象，以一次函数为例
直线和圆的位置关系

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Means
Addition
Centroid or Barycenter
Linear Equations
Cone

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