专家进!火急!要分的来,好的+分!已知Rt△ABC,角ABC=90°,CA=CB,有一个圆心角为45°,半径的长等于CA的扇形CEF绕点C旋转且CE,CF分别与AB交与点M,N.1.当扇形CEF绕点C在角ABC的内部旋转时,求证以AM,MN,BN为三
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![专家进!火急!要分的来,好的+分!已知Rt△ABC,角ABC=90°,CA=CB,有一个圆心角为45°,半径的长等于CA的扇形CEF绕点C旋转且CE,CF分别与AB交与点M,N.1.当扇形CEF绕点C在角ABC的内部旋转时,求证以AM,MN,BN为三](/uploads/image/z/7872123-3-3.jpg?t=%E4%B8%93%E5%AE%B6%E8%BF%9B%21%E7%81%AB%E6%80%A5%21%E8%A6%81%E5%88%86%E7%9A%84%E6%9D%A5%2C%E5%A5%BD%E7%9A%84%2B%E5%88%86%21%E5%B7%B2%E7%9F%A5Rt%E2%96%B3ABC%2C%E8%A7%92ABC%3D90%C2%B0%2CCA%3DCB%2C%E6%9C%89%E4%B8%80%E4%B8%AA%E5%9C%86%E5%BF%83%E8%A7%92%E4%B8%BA45%C2%B0%2C%E5%8D%8A%E5%BE%84%E7%9A%84%E9%95%BF%E7%AD%89%E4%BA%8ECA%E7%9A%84%E6%89%87%E5%BD%A2CEF%E7%BB%95%E7%82%B9C%E6%97%8B%E8%BD%AC%E4%B8%94CE%2CCF%E5%88%86%E5%88%AB%E4%B8%8EAB%E4%BA%A4%E4%B8%8E%E7%82%B9M%2CN.1.%E5%BD%93%E6%89%87%E5%BD%A2CEF%E7%BB%95%E7%82%B9C%E5%9C%A8%E8%A7%92ABC%E7%9A%84%E5%86%85%E9%83%A8%E6%97%8B%E8%BD%AC%E6%97%B6%2C%E6%B1%82%E8%AF%81%E4%BB%A5AM%2CMN%2CBN%E4%B8%BA%E4%B8%89)
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