Question

Hi! i need help with a question if anyone can answer it really quick please. "Which side lengths would NOT form a triangle?

{3, 4, 5}
{2, 5, 9}
{5, 10, 12}
{7, 9, 11}"

Answer 1

{2, 5, 9}

Explanation:

The sum of the lengths of any two sides of a triangle

must be greater than the length of the third side.