Page 141 - Math Course 2 (Book 2)

Triangle Inequality Theorem

Skill Practice!

Determine whether the given measures can be the lengths of the sides of a triangle. Write yes or no.
1. 2, 3, 4 2. 5, 7, 9

3. 4, 8, 11 4. 13, 13, 26

5. 9, 10, 20 6. 15, 17, 19

7. 14, 17, 31 8. 6, 7, 12

Find the range for the measure of the third side of a triangle given the measures of two sides.
9. 5 and 9 10. 7 and 14

11. 8 and 13 12. 10 and 12

13. 12 and 15 14. 15 and 27

15. 17 and 28

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