如图,已知AD是△ABC的角平分线,且AB>AC,求证:AB-AC>BD-DC.
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![如图,已知AD是△ABC的角平分线,且AB>AC,求证:AB-AC>BD-DC.](/uploads/image/z/8768115-27-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5AD%E6%98%AF%E2%96%B3ABC%E7%9A%84%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%2C%E4%B8%94AB%EF%BC%9EAC%2C%E6%B1%82%E8%AF%81%EF%BC%9AAB%EF%BC%8DAC%EF%BC%9EBD%EF%BC%8DDC.)
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