Find the area of the Quadrilateral ABCD whose vertices are A ( -3 , -1) , B (-2, -4) , C ( 4, -1) andD (3,4) . ..
Let the vertices of the quadrilateral be A(-3, -1), B(-2, -4), C(4, -1) and D(3, 4).
Let AC be the diagonal of quadrilateral ABCD. Therefore,
We know that,
Substitute these values in equation (1), we have,
Hence, area of quadrilateral is 28 square units.