Question

PLEASE HURRY!!!!!!! Determine which set of side measurements could be used to form a triangle. 1, 5, 9 3, 17, 21 6, 12, 15 9, 8, 17

Answer 1

Answer:its 9,8,17

Explanation:

you gotta trust me on this one

Answer 2

6, 12, 15 could be used to form a triangle

Explanation:

The side measurements could be used to form a triangle if they form a triplet i.e they obey the inequality,

a + b > c

I.e. sum of any two sides is greater than the 3rd side

Trying the sets, we have,

1,5,9

1 + 5 < 9

So, this can't be a triangle

3, 17, 21

3 + 17 = 20 < 21

this can't be a triangle

6, 12, 15

6 + 12 > 15

12 + 15 > 6

15+ 6 > 12

This could be used to form a triangle

9, 8, 17

9 + 8 = 17 since this is not greater than 17,

this can't be a triangle