1.

A line AB is parallel to the line CD. How is this symbolically written?

A.  \[\overleftrightarrow{AB}\ne \overleftrightarrow{CD}\]             
B.         \[\overleftrightarrow{AB}=\overleftrightarrow{CD}\]
C.  \[\overleftrightarrow{AB}\bot \overleftrightarrow{CD}\]           
D.         \[\overleftrightarrow{AB}//\overleftrightarrow{CD}\]  
Answer» E.


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