在三角形ABC中,AB=AC=2,角A=90°,取一块含45°角的直角三角尺,将直角顶点斜放在斜边BC中点处O处,绕O时针旋转,是90°角的两边AB,AC分别相交于点E,F.若将直角三角尺45°角的顶点放在斜边的中点O处,绕
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![在三角形ABC中,AB=AC=2,角A=90°,取一块含45°角的直角三角尺,将直角顶点斜放在斜边BC中点处O处,绕O时针旋转,是90°角的两边AB,AC分别相交于点E,F.若将直角三角尺45°角的顶点放在斜边的中点O处,绕](/uploads/image/z/6689899-19-9.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAB%3DAC%3D2%2C%E8%A7%92A%3D90%C2%B0%2C%E5%8F%96%E4%B8%80%E5%9D%97%E5%90%AB45%C2%B0%E8%A7%92%E7%9A%84%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%B0%BA%2C%E5%B0%86%E7%9B%B4%E8%A7%92%E9%A1%B6%E7%82%B9%E6%96%9C%E6%94%BE%E5%9C%A8%E6%96%9C%E8%BE%B9BC%E4%B8%AD%E7%82%B9%E5%A4%84O%E5%A4%84%2C%E7%BB%95O%E6%97%B6%E9%92%88%E6%97%8B%E8%BD%AC%2C%E6%98%AF90%C2%B0%E8%A7%92%E7%9A%84%E4%B8%A4%E8%BE%B9AB%2CAC%E5%88%86%E5%88%AB%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9E%2CF.%E8%8B%A5%E5%B0%86%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%B0%BA45%C2%B0%E8%A7%92%E7%9A%84%E9%A1%B6%E7%82%B9%E6%94%BE%E5%9C%A8%E6%96%9C%E8%BE%B9%E7%9A%84%E4%B8%AD%E7%82%B9O%E5%A4%84%2C%E7%BB%95)
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