如图,已知∠ABC=70°,将∠ABC沿射线BA方向平移至∠ADC1,平移的距离为BD,再将∠ABC沿射线BA方向平移至∠ADC1,平移的距离为BD,再将∠ABC沿射线BC方向平移至∠A1EC,平移的距离为BE,DC1与EA1交于点B1,则∠
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![如图,已知∠ABC=70°,将∠ABC沿射线BA方向平移至∠ADC1,平移的距离为BD,再将∠ABC沿射线BA方向平移至∠ADC1,平移的距离为BD,再将∠ABC沿射线BC方向平移至∠A1EC,平移的距离为BE,DC1与EA1交于点B1,则∠](/uploads/image/z/3525910-70-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%E2%88%A0ABC%3D70%C2%B0%2C%E5%B0%86%E2%88%A0ABC%E6%B2%BF%E5%B0%84%E7%BA%BFBA%E6%96%B9%E5%90%91%E5%B9%B3%E7%A7%BB%E8%87%B3%E2%88%A0ADC1%2C%E5%B9%B3%E7%A7%BB%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BABD%2C%E5%86%8D%E5%B0%86%E2%88%A0ABC%E6%B2%BF%E5%B0%84%E7%BA%BFBA%E6%96%B9%E5%90%91%E5%B9%B3%E7%A7%BB%E8%87%B3%E2%88%A0ADC1%2C%E5%B9%B3%E7%A7%BB%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BABD%2C%E5%86%8D%E5%B0%86%E2%88%A0ABC%E6%B2%BF%E5%B0%84%E7%BA%BFBC%E6%96%B9%E5%90%91%E5%B9%B3%E7%A7%BB%E8%87%B3%E2%88%A0A1EC%2C%E5%B9%B3%E7%A7%BB%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BABE%2CDC1%E4%B8%8EEA1%E4%BA%A4%E4%BA%8E%E7%82%B9B1%2C%E5%88%99%E2%88%A0)
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