一道数学题,quickly!如图1,将一张矩形纸片对折,然后沿虚线剪切,得到两个三角形纸片三角形ABC,A1B1C1.(1).将三角形ABC,A1B1C1.如图2摆放,使点A1与B重合,点B1在AC边的延长线上,连接CC1交BB1于点E.求
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![一道数学题,quickly!如图1,将一张矩形纸片对折,然后沿虚线剪切,得到两个三角形纸片三角形ABC,A1B1C1.(1).将三角形ABC,A1B1C1.如图2摆放,使点A1与B重合,点B1在AC边的延长线上,连接CC1交BB1于点E.求](/uploads/image/z/12636503-71-3.jpg?t=%E4%B8%80%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2Cquickly%21%E5%A6%82%E5%9B%BE1%2C%E5%B0%86%E4%B8%80%E5%BC%A0%E7%9F%A9%E5%BD%A2%E7%BA%B8%E7%89%87%E5%AF%B9%E6%8A%98%2C%E7%84%B6%E5%90%8E%E6%B2%BF%E8%99%9A%E7%BA%BF%E5%89%AA%E5%88%87%2C%E5%BE%97%E5%88%B0%E4%B8%A4%E4%B8%AA%E4%B8%89%E8%A7%92%E5%BD%A2%E7%BA%B8%E7%89%87%E4%B8%89%E8%A7%92%E5%BD%A2ABC%2CA1B1C1.%EF%BC%881%EF%BC%89.%E5%B0%86%E4%B8%89%E8%A7%92%E5%BD%A2ABC%2CA1B1C1.%E5%A6%82%E5%9B%BE2%E6%91%86%E6%94%BE%2C%E4%BD%BF%E7%82%B9A1%E4%B8%8EB%E9%87%8D%E5%90%88%2C%E7%82%B9B1%E5%9C%A8AC%E8%BE%B9%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%2C%E8%BF%9E%E6%8E%A5CC1%E4%BA%A4BB1%E4%BA%8E%E7%82%B9E.%E6%B1%82)
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