SOLUTION: If two sides of a triangle are 9 feet and 20 feet, what is the range of values for the missing side?

Question 944553: If two sides of a triangle are 9 feet and 20 feet, what is the range of values for the missing side?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The unknown side length, x.

Use Triangle Inequality Theorem.
;
Solve for the possible solutions of x within this system. The result will be an inequality, NOT a specific value.

The last inequality of the system will give nonsense.
The other two inequalities of the system will give you .
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