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Author:h6741957g

Topic:Orthocenter

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平行線的判定
圓的基本性質
异形操场
三角函数的副本
常见四边形是否是双心四边形

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空間三坐標平面101.12.22
會動的數據*3
一元二次不等式(圖解法)
正弦函數 y=Sin(x)
弧度制的意义的副本

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Similar Triangles
Incircle or Inscribed Circle
Correlation
Piecewise Functions
Linear Equations

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