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如图,在△ABC中,DE∥BC,若,DE=2,则BC的长为 .
如图,在△ABC中,DE∥BC,若
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101349169866842/SYS201311031013491698668013_ST/0.png)
,DE=2,则BC的长为
.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101349169866842/SYS201311031013491698668013_ST/images1.png)
考点分析:
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