1.

ABCD is a parallelogram and P is the point of intersection of the diagonals. If O is the origin, then \(\overrightarrow {{\rm{OA}}} + \overrightarrow {{\rm{OB}}} + \overrightarrow {{\rm{OC}}} + \overrightarrow {{\rm{OD}}} \) is equal to

A. \(4{\rm{\;}}\overrightarrow {{\rm{OP}}} \)
B. \(2{\rm{\;}}\overrightarrow {{\rm{OP}}} \)
C. \(\overrightarrow {{\rm{OP}}} \)
D. Null vector
Answer» B. \(2{\rm{\;}}\overrightarrow {{\rm{OP}}} \)


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