Question

Which set of numbers could NOT represent the side lengths of a triangle.
Question 10 options:
1) 11, 11, 15
2) 3, 4, 5
3) 18, 28, 40
4) 4, 8, 12

Answer 1

i think it might be 3)

Answer 2

Right :D

Answer 3

wait no

Answer 4

not 3

Answer 5

dang i was wrong

Answer 6

Yeah, when you add any two sides, the sum has to ALWAYS be greater than the third side.

Answer 7

So the answer is 2)

Answer 8

Why?

Answer 9

why what?

Answer 10

Why'd you pick 2?

Answer 11

because all of the numbers when added together are larger than the third number

Answer 12

no, if you can find two sides whose sum is not greater than the third, then there can be no triangle formed with those lengths

Answer 13

it is a triangle though correct?

Answer 14

For a triangle sum of any two sides is always greater than the third side.

Answer 15

The answer is 4 because 4+8=12 which would describe a line.

Answer 16

I should say, connected lines AB, BC and AC of lengths 4, 8 and 12 would all lie on one line and therefore could not describe a triangle.