Question

If the points A (6,1), B (8, 2), C (9, 4) and D (p, 3) are the vertices of a parallelogram taken in order,
then find the value of p.​

Answer 1

We know that the diagonals of a parallelogram bisect each other. So, coordinates of the mid-point of diagonal AC are same as the coordinates of the mid-point of diagonal BD.