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与平移变换一样,旋转变换也是证平面几何题的有效方法之一. 所谓图形的旋转变换是指图形上的各点绕着一个定点旋转一个
Like the translation transformation, the rotation transformation is also one of the effective methods of geometric plane geometry. The so-called graphic rotation transformation means that each point on the graph rotates around a fixed point.