Answer:
C(0,q)
Explanation:
To find the coordinate of point C, we need to use the fact that opposite sides of a parallelogram are parallel and equal in length. Therefore, the x-coordinate of point C must be equal to the x-coordinate of point D, and the y-coordinate of point C must be equal to the y-coordinate of point E. Using the given coordinates, we have:
C(x, y)
D(0, q)
E(-r, 0)
So, we know that x = 0 and y = 0. Therefore, the coordinate of point C is (0, q).