Question

Find the area of quadrilateral ABCD the coordinates of whise vertices are A(-3,2),B(5,4),C(7,-6)and D(-5,-4)

Answer 1

Area of the quadrilateral ABCD

$\frac{1}{2} (x1y2 + x2y3 + x3y4 + x4y1) - (x2y1 + x3y2 + x4y3 + x1y4)$

by using this formula we can solve this sum