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(2007•莱芜)如图,四边形ABCD为矩形纸片,把纸片ABCD折叠,使点B恰好...
(2007•莱芜)如图,四边形ABCD为矩形纸片,把纸片ABCD折叠,使点B恰好落在CD边的中点E处,折痕为AF,若CD=6,则AF等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987939753/SYS201310191104549879397008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987939753/SYS201310191104549879397008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987939753/SYS201310191104549879397008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987939753/SYS201310191104549879397008_ST/2.png)
D.8
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