已知线段AB延长AB到C,使BC=AB,在AB的反延长线上截去AD=AC,则DB:AB=():(),CD:BD=():()
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![已知线段AB延长AB到C,使BC=AB,在AB的反延长线上截去AD=AC,则DB:AB=():(),CD:BD=():()](/uploads/image/z/3742262-62-2.jpg?t=%E5%B7%B2%E7%9F%A5%E7%BA%BF%E6%AE%B5AB%E5%BB%B6%E9%95%BFAB%E5%88%B0C%2C%E4%BD%BFBC%3DAB%2C%E5%9C%A8AB%E7%9A%84%E5%8F%8D%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E6%88%AA%E5%8E%BBAD%3DAC%2C%E5%88%99DB%EF%BC%9AAB%3D%28%29%3A%28%29%2CCD%EF%BC%9ABD%EF%BC%9D%EF%BC%88%EF%BC%89%EF%BC%9A%EF%BC%88%EF%BC%89)
已知线段AB延长AB到C,使BC=AB,在AB的反延长线上截去AD=AC,则DB:AB=():(),CD:BD=():()
已知线段AB延长AB到C,使BC=AB,在AB的反延长线上截去AD=AC,则DB:AB=():(),CD:BD=():()
已知线段AB延长AB到C,使BC=AB,在AB的反延长线上截去AD=AC,则DB:AB=():(),CD:BD=():()
设AB=x,则有BC=x,AD=2x,所以DB:AB=(3):(1),CD:BD=(4):(3)
DB:AB=3:1 , CD:BD=4:3
DB:AB = 3:1
CD:BD = 4:3