If the points A (1, -2), B (2, 3) , C (a, 2) and (-4, -3) form a parallelogram , find the value of a and height of the parallelogram taking AB as base.
If the points A (1, -2), B (2, 3) , C (a, 2) and (-4, -3) form a parallelogram , find the value of a and height of the parallelogram taking AB as base.