On the other
hand if we draw a parallelogram measuring nineteen
feet by one, the number of square feet enclosed will
be no greater than the number of linear feet making
the actual length of the parallelogram, though the
perimeter will be exactly as that of the figure which
encloses an area of 100 square feet. Consequently the
area enclosed by four lines will decrease in proportion
as we depart from the form of a square.