已知△ABC,利用直尺和圆规:(1)作∠ABC的平分线BD交AC于点D;(2)作线段BD的垂直平分线交AB于E,交BC于F(3)证明:BD垂直平分EF
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![已知△ABC,利用直尺和圆规:(1)作∠ABC的平分线BD交AC于点D;(2)作线段BD的垂直平分线交AB于E,交BC于F(3)证明:BD垂直平分EF](/uploads/image/z/5264846-62-6.jpg?t=%E5%B7%B2%E7%9F%A5%E2%96%B3ABC%2C%E5%88%A9%E7%94%A8%E7%9B%B4%E5%B0%BA%E5%92%8C%E5%9C%86%E8%A7%84%3A%281%29%E4%BD%9C%E2%88%A0ABC%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BFBD%E4%BA%A4AC%E4%BA%8E%E7%82%B9D%EF%BC%9B%EF%BC%882%EF%BC%89%E4%BD%9C%E7%BA%BF%E6%AE%B5BD%E7%9A%84%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E7%BA%BF%E4%BA%A4AB%E4%BA%8EE%2C%E4%BA%A4BC%E4%BA%8EF%EF%BC%883%EF%BC%89%E8%AF%81%E6%98%8E%EF%BC%9ABD%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86EF)
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