a parallelogram is drawn with lines joining (x1,y1) and (x2,y2) to the origin as adjacent sides,what are the coordinates of the fourth vertex?

a parallelogram is drawn with lines joining (x1,y1) and (x2,y2) to the

1.	a parallelogram is drawn with lines joining (x1,y1) and (x2,y2) to the origin as adjacent sides,what are the coordinates of the fourth vertex?
Answer» Let C (p,q) be fourth vertex let A(X1,y1) and B (X2,Y2) & O(0,0) mid pt of diagonal AB(x1+x2/2,y1+y2/2) mid pt of diagonal OC(p/2,q/2) p=x1+x2,q=y1+y2

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a parallelogram is drawn with lines joining (x1,y1) and (x2,y2) to the origin as adjacent sides,what are the coordinates of the fourth vertex?

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