Problem 13 of 7
Find the possible range for missing triangle side x when the other sides are 5 and 8.
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use sum and difference inequalities.
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Use strict lower bound from side difference and strict upper bound from side sum.
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Solution
Walkthrough
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1. Subtract the smaller known side from the larger for the lower bound.
2. Add the known sides for the upper bound.
3. Write the strict range for x.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Inclusive endpoints.