==Properties==Any right-angled triangle whose sidelengths are a Pythagorean triple is a Heronian triangle, as the side lengths of such a triangle are integers, and its area is also an integer, being half of the product of the two shorter sides of the triangle, at least one of which must be even.
Herónski trikótnik je v geometriji trikotnik, katerega dolžine stranic in ploščina so vsa cela števila.