Question

The area of
the quadrilateral formed by the
vertices(x1,y1), (x2,y2), (x3,y3) and (x4,y4)is given by

Answer 1

1/2[x1(y2-y4)+x2(y3-y1)+x3(y4-y2)+x4(y1-y3)]

Answer 2

Answer:

1/2[X1(y2-y4)+X2(y3-y1)+X3(y4-y2)+x4(y1-y3)]

or to find out the area we can draw a diagonal and we will find the area of both triangles and add them.