Rational Quadrilateral

A rational quadrilateral is a Quadrilateral for which the sides, Diagonals, and Area are Rational. The simplest case has sides $a=52$, $b=25$, $c=39$, and $d=60$ and Diagonals of length $p=63$ and $q=56$.

See also Area, Diagonal (Polygon), Rational Quadrilateral