Question

Which of the following sets could not be the lengths of the sides of a triangle?

A.) {5, 6, 12}

B.) {5, 7, 10}

C.) {4, 4, 5}

D.) {4, 5, 5}

Answer 1

I think a or b

Answer 2

For the set to be possible lengths of a triangle, the two shortest sides have to add up to be longer than the longest side.

Otherwise, you might have something like this: