



 
Let T = the length of the third side. Then the second side is T  4. So any two sides are greater than the remaining side. This provides 3 inequalities: T + (T  4) > 11 When you simplify, what do you learn about the valid range for T, the third side? Is it possible for T to be "as large as you want" or "as small as you want"? What does that mean the valid range of the second side must be? Cheers,  


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