Question 33995
to find the area from 3 co-ordinates, you use something called the determinant, based upon matrix theory.


I am assuming you haven't done this, so i shall just quote the "formula" for you:


{{{ area = (1/2)abs((x[1]y[2]) - (x[2]y[1]) + (x[2]y[3]) - (x[3]y[2]) + (x[3]y[1]) - (x[1]y[3]) ) }}}


where the 3 coordinates are {{{ (x[1]y[1]) }}}, {{{ (x[2]y[2]) }}} and {{{ (x[3]y[3]) }}}


jon.