Question

Which of the following could NOT be the lengths of the sides of

a triangle?
A 3 in., 4 in., 5 in.
6 in., 9 in., 5in.
7 in., 3 in., 10 in.
B
C
D
5 in., 3 in., 5 in.

Answer 1

im guessing that the middle two are b and c and the bottom one is d, so the answer is c (7, 3, and 10) because the sum of the smaller two sides CANNOT be equal to or less than the biggest side. In all of the other options, the sum of the smaller two sides are larger than the biggest side.