The points `A(4, 2), B(7, 2), C(0, 9) and D( 3, 5)` form a parallelogram. Find the the altitude of the parallelogram on the base AB.

If the points A(2, 2), B(-2, -3), C(1, -3) and D(x, y) form a parallelogram then find the value of x and y.

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

Show that points A(-1, 0) , B(-2,1) , C(1,3) and D(2,2) form a parallelogram .

If the points A(4, 7, 6), B(2, 3, 2), C(-1, -2, -1) and D form a parallelogram, then D-=

If the points A (1,2), B (2,3) , C *a,2) and D (-4-,3) form a parallelogram , them 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 D (-4-,3) form a parallelogram , them 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)andD(-4,-3) forms a parallelogram, find the value of 'a'.

If the points A(-2,-1),B(1,0),C(a,3) and D(1,b) form a parallelogram ABCD, Then the values of a and b are