Assertion: triangle's area | /r/HasProperty | integer
Facets:
Source sentences:
text: 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.
text: By Pick's theorem a lattice triangle has a rational area that either is an integer or has a denominator of 2.
text: ≥ ≥ and the area is ; in a Heronian triangle all of , , , and are integers.