How many distinct triangles with positive integer sides have perimeter equal to 12? (Triangles are distinct if they are not congruent.)
How many distinct triangles with positive integer sides have perimeter equal to 12?
I assume, the answer is 3 (2,5,5) (3,4,5) (4,4,4)
see https://www.quora.com/How-many-triangles-can-be-formed-when-perimeter-is-12-and-sides-are-positive-integers