Question 253705
Determine whether the given measures can be the lengths of the sides of a triangle. Write yes or no.
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General Rule: Each PAIR of sides must have a sum
that is GREATER than the 3rd side.
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1. 2,3,4 -----------yes 
2. 5,7,9 -----------yes
3. 4,8,11 ----------yes 
4,13,13,26 ---------no because 13+13=26 so the figure would be a line 
5. 9,10,20 ---------no, because 9+10<20 
6. 15,17,19 --------yes 
7. 14,17,31 --------no because 14+17=31 so the figure would be a line
8. 6,7,12 ----------yes

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Cheers,
Stan H.