P(-5,-3), Q(-4,-6), R(2,-3) and S (1,2) are the vertices of a quadrilateral PQRS, find its area

If P(-5,\ -3),\ Q(-4,\ -6),\ R(2,\ -3) and S(1,\ 2) are the vertices of a quadrilateral P Q R S , find its area.

(1, 1), (3, 4), (5, –2) and (4, –7) are vertices of a quadrilateral then find its area.

If P(1, 2), Q(4, 6), R(6, 7) and S(a, b) are the vertices of a parallelogram PQRS, then

If P(–2, 4), Q(4, 8), R(10, 5) and S(4, 1) are the vertices of a quadrilateral, show that it is a parallelogram.

If P(–2, 4), Q(4, 8), R(10, 5) and S(4, 1) are the vertices of a quadrilateral, show that it is a parallelogram.

If P(1,2), Q(4,6), R(5,7) and S(a, b) are the vertices of a parallelogram P Q R S , then

If P (1, 2), Q (4, 6), R (5, 7) and S (a, b) are the vertices of a parallelogram PQRS, then