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如图,直线∥,直线与、相交,∠1 =70°,则∠2 =( )
A.70° B.20° C.110° D.50°
如图,直线a∥b,直线c与a、b相交,∠1=70°,则∠2的大小是
A.20° B.50° C.70° D.110°
如图,直线a∥b,直线c与a、b相交,∠1=70°,则∠2=
A.70°
B.20°
C.110°
D.50°