Problem #WSP-000029

Problems Geometry Geometric inequalities Triangle inequality

Problem

There is a triangle with side lengths a, b and c. Does there exist a triangle with side lengths |ab|, |bc| and |ca|? Does it depend on what a, b and c are?
Recall that a triangle can be formed with side lengths x, y and z if and only if all the inequalities x+y>z, y+z>x and z+x>y hold.