Question

which side lengths allow you to construct a triangle:
1,3, and 8
4,1, and 9
7,2, and 2
6,8, and 10

Answer 1

1+3 < 8 No good.
4+1 < 9 No good.
2+2 < 7 No good.
6+8 > 10, 6+10 > 8, 8+10 > 6 -- That's it.

The sum of the lengths of any two sides MUST be GREATER than the length of the third side. It takes three to prove it, but only one to disprove it!

Answer 2

o wow lol i feel like an idiot i cant believe i forgot that rule. :D