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Mathematics 9 Online
OpenStudy (anonymous):

A triangle has the following measurements. What is a possible length for the third side? AB = 4, BC = 17, CA = ?

hero (hero):

|4-17|<CA<|4+17|

hero (hero):

so CA has to be between 13 and 21

hero (hero):

But only one value will probably work

hero (hero):

And 14 works

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