如图1,△ABC中,角BAC=90°,AB=AC,AE是过A的一条直线,且B,C在AE的异侧,BD⊥AE于D,CE⊥AE于E(1)求证BD=DE+CE;(2)若直线AE绕A点旋转在图2位置时(BD<CE),其余条件不变,问BD与DE,CE的关系如何?并证明之.(3)若直
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![如图1,△ABC中,角BAC=90°,AB=AC,AE是过A的一条直线,且B,C在AE的异侧,BD⊥AE于D,CE⊥AE于E(1)求证BD=DE+CE;(2)若直线AE绕A点旋转在图2位置时(BD<CE),其余条件不变,问BD与DE,CE的关系如何?并证明之.(3)若直](/uploads/image/z/1586159-71-9.jpg?t=%E5%A6%82%E5%9B%BE1%2C%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92BAC%3D90%C2%B0%2CAB%3DAC%2CAE%E6%98%AF%E8%BF%87A%E7%9A%84%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%2C%E4%B8%94B%2CC%E5%9C%A8AE%E7%9A%84%E5%BC%82%E4%BE%A7%2CBD%E2%8A%A5AE%E4%BA%8ED%2CCE%E2%8A%A5AE%E4%BA%8EE%281%29%E6%B1%82%E8%AF%81BD%3DDE%2BCE%3B%282%29%E8%8B%A5%E7%9B%B4%E7%BA%BFAE%E7%BB%95A%E7%82%B9%E6%97%8B%E8%BD%AC%E5%9C%A8%E5%9B%BE2%E4%BD%8D%E7%BD%AE%E6%97%B6%EF%BC%88BD%EF%BC%9CCE%EF%BC%89%2C%E5%85%B6%E4%BD%99%E6%9D%A1%E4%BB%B6%E4%B8%8D%E5%8F%98%2C%E9%97%AEBD%E4%B8%8EDE%2CCE%E7%9A%84%E5%85%B3%E7%B3%BB%E5%A6%82%E4%BD%95%3F%E5%B9%B6%E8%AF%81%E6%98%8E%E4%B9%8B.%283%29%E8%8B%A5%E7%9B%B4)
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