Question

Which of the following sets could not be the lengths of the sides of a triangle? {5, 6, 12} {5, 7, 10} {4, 4, 5} {4, 5, 5}

Answer 1

The set {5, 6, 12} cannot be the lengths of the sides of a triangle because of the smaller sides, 5 and 6, which sum up to 11, which is less than 12. Hope this helps!