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如图,在菱形ABCD中,∠ADC=120°,则BD:AC等于( ) A.:2 B...
如图,在菱形ABCD中,∠ADC=120°,则BD:AC等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825026_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825026_ST/0.png)
:2
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825026_ST/1.png)
:3
C.1:2
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825026_ST/2.png)
:1
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