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如图,正方体ABCD-A1B1C1D1中,异面直线BD1与A1D所成的角等于( ...
如图,正方体ABCD-A
1B
1C
1D
1中,异面直线BD
1与A
1D所成的角等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225021022634161/SYS201311012250210226341009_ST/images0.png)
A.30°
B.45°
C.60°
D.90°
考点分析:
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