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In triangle XYZ, the length of side XY is 21 mm and the length of side YZ is 31 mm. Which of the following could
be the length of side XZ?

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MissPhiladelphia

There are two possible answer answer is this problem since no diagram is given

First if XZ is the longest side

XZ < Xy + YZ

XZ < 31 + 21

The possible length of XZ = 51 mm

If XZ is not the longest length

YZ < XZ + XY

31 < 21 + XZ

So the possible length of XZ = 11 mm

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