Question

Do the side lengths 4, 5, and 10 form a triangle? Select the correct answer and
reasoning
OA) Yes, because the sum of the side lengths is 19.
B) Yes, because each side length is less than 15.
C) No, because 10 + 4 isn't less than 5.
D) No, because 5 + 4 isn't greater than 10.

Answer 1

D) no, because 5+4 isn't greater than 10.

The sum of two sides of a triangle must be greater than the third side.

but,

5+4<10