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

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.

ABCD is a quadrilateral. E is the point of intersection of the line joining the middle points of the opposite sides. If O is any point then bar(OA)+bar(OB)+bar(OC)+bar(OD)=

ABCD is a quadrilateral. E is the point of intersection of the line joining the mid-points of the oppsote sides. If O is any point and OA+OB+OC+OD=xOE, then x is equal to

ABCD is a quadrilateral. E is the point of intersection of the line joining the mid-points of the oppsote sides. If O is any point and OA+OB+OC+OD=xOE, then x is equal to

Let O be an interior point of Delta ABC such that 2vec OA+5vec OB+10vec OC=vec 0

ABCD is a quadrilateral and G the point of intersection of the lines joining the middle points of opposite sides .IF o is any point prove that bar(OA)+bar(OB)+bar(OC)+bar(OD)=bar(4OG)

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.