A) \[\overleftrightarrow{AB}\ne \overleftrightarrow{CD}\]
B) \[\overleftrightarrow{AB}=\overleftrightarrow{CD}\]
C) \[\overleftrightarrow{AB}\bot \overleftrightarrow{CD}\]
D) \[\overleftrightarrow{AB}//\overleftrightarrow{CD}\]
Correct Answer: D
Solution :
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