vec OA+vec OB+vec OC+vec OD=vec xOE," then "x" is equal to "

ABCD is a quadrilateral and O is point in its plane. Show that if vec OA+ vec OB+ vec OC+ vec OD= vec 0 , then O is the point of the interection of the lines joining the mid-points of the opposite sides of ABCD.

If OACB is a parallelogram with vec OC=vec a and vec AB=vec b, then vec OA is equal to

If E is the intersection point of diagonals of parallelogram ABCD and vec( OA) + vec (OB) + vec (OC) + vec (OD) = xvec (OE) where O is origin then x=

ABCD is a quadrilateral and O is point in its plabe such that vec OA+vec OB+vec OC+vec OD=0 show that 0 is the pooint of intersection of the lines joining the mid points of the opposite sides of quadrilateral ABCD.

If | vec AO + vec OB | = | vec BO + vec OC |, then A, B, C form

Let O be the centre of a regular hexagon ABCDEF. Find the sum of the vectors vec OA,vec OB,vec OC,vec OD,vec OE and vec OF .

ABCD is a quadrilateral and E is the point of intersection of the lines joining the middle points of opposite side. Show that the resultant of vec (OA) , vec(OB) , vec(OC) and vec(OD) = 4 vec(OE) , where O is any point.

ABCD is a quadrilateral and E is the point of intersection of the lines joining the middle points of opposite side. Show that the resultant of vec (OA) , vec(OB) , vec(OC) and vec(OD) = 4 vec(OE) , where O is any point.

ABCD is a quadrilateral and E is the point of intersection of the lines joining the middle points of opposite side. Show that the resultant of vec (OA) , vec(OB) , vec(OC) and vec(OD) = 4 vec(OE) , where O is any point.

ABCD is a quadrilateral and E is the point of intersection of the lines joining the middle points of opposite side. Show that the resultant of vec (OA) , vec(OB) , vec(OC) and vec(OD) = 4 vec(OE) , where O is any point.