Answer 1

From the figure, we can see that the vertices of the square are (2, 5), (6, 5), (2, 9) and (6, 9).
The vertices of the diagonals are (2, 9), (6, 5) and (2, 5),(6, 9).
∴ Coordinates of the centre = \[\left( \frac{6 + 2}{2}, \frac{5 + 9}{2} \right) = \left( 4, 7 \right)\]