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正弦定理

Author:张坤

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找出對稱軸
四邊形的特性
兩組對邊相等的四邊形
畫出對稱圖形
錐體建築師

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坐標測驗
反正切函數
工具：PlaneText, PlaneArrow
拋物線2-焦點法
诱导公式四（原点对称关系）

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Ellipse
Probability
Mathematics
Plane Figures or Shapes
Cube

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