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Two sides of a triangle have lengths 10 and 15. What must be true about the length of the third side?

User Daud Khan
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I believe this means the third side has to be greater than the sum of the first two sides, in other words greater than 25 which is the sum of 10 and 15. 
User Bob De Graaf
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The third side can't be shorter than 5, and it can't be longer than 25. It can be any length between those limits.
User Abedurftig
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