延长线段AB到点C,使BC=2AB,在延长线段BA到点D,使AD=1/2AB,则AB:AC=___,CD:BD=___

问题描述:

延长线段AB到点C,使BC=2AB,在延长线段BA到点D,使AD=1/2AB,则AB:AC=___,CD:BD=___

延长线段AB到点C,使BC=2AB,在延长线段BA到点D,使AD=1/2AB,则AB:AC=___,CD:BD=___
D—A——B————C
AB:AC=1/3,
CD:BD=7/3AB:AC=2这不应该是比的吗?AB:AC=1/3,