The coordinates for the unknown point are (h-m, n).
Explanation:
The given diagram is a parallelogram and as per definition, the opposite sides are equal. So the upper and lower side are equal in length while the right and left side are also equal. The given parallelogram is tilted to the left side.
The height of the right side is equal to the height of the left side. The height according to the coordinate is n. So the y coordinate of the unknown point is n.
As the parallelogram is tilted towards the left, the x coordinate of the unknown point must be lesser than h. As (m, n) is in the second quadrant the x value is negative and y value is positive. The value of x is actually -m. The x coordinate of the unknown point is therefore h-m.
