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[几何] 如图，最好不用相似三角形.小学四年级奥数

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realnumber Posted 2014-12-8 10:48 |Read mode

QQ图片20141208104636.jpg

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Author| realnumber Posted 2014-12-8 13:03

QQ图片20141208130154.png

同事王的解答

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