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如图,若正△A1B1C1内接于正△ABC的内切圆,则的值为( ) A. B. C...
如图,若正△A
1B
1C
1内接于正△ABC的内切圆,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/0.png)
的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185413140358749/SYS201311011854131403587005_ST/4.png)
考点分析:
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