如图,三角形abe和三角形adc,是三角形abc分别沿着ab,ac边翻折180度形成的,若角一:角二:角三等于5:28:3,则角a的度数为( )a.80 b.100 c.60 d.45 请给过程,
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![如图,三角形abe和三角形adc,是三角形abc分别沿着ab,ac边翻折180度形成的,若角一:角二:角三等于5:28:3,则角a的度数为( )a.80 b.100 c.60 d.45 请给过程,](/uploads/image/z/1991914-34-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E4%B8%89%E8%A7%92%E5%BD%A2abe%E5%92%8C%E4%B8%89%E8%A7%92%E5%BD%A2adc%2C%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2abc%E5%88%86%E5%88%AB%E6%B2%BF%E7%9D%80ab%2Cac%E8%BE%B9%E7%BF%BB%E6%8A%98180%E5%BA%A6%E5%BD%A2%E6%88%90%E7%9A%84%2C%E8%8B%A5%E8%A7%92%E4%B8%80%3A%E8%A7%92%E4%BA%8C%3A%E8%A7%92%E4%B8%89%E7%AD%89%E4%BA%8E5%3A28%3A3%2C%E5%88%99%E8%A7%92a%E7%9A%84%E5%BA%A6%E6%95%B0%E4%B8%BA%28++++%29a.80+++b.100+++c.60++++d.45++%E8%AF%B7%E7%BB%99%E8%BF%87%E7%A8%8B%2C)
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