A triangle with side lengths , , and and triangle area satisfies
Equality holds iff the triangle is equilateral.
A triangle with side lengths , , and and triangle area satisfies
Equality holds iff the triangle is equilateral.
Weisstein, Eric W. "Weitzenböck's Inequality." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/WeitzenboecksInequality.html