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which of the following sets could not be the lengths of the sides of a triangle. {11,14, 25} {5, 6, 10} {4, 4, 5} {1, 2, 2}
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which of the following sets could not be the lengths of the sides of a triangle. {11,14, 25} {5, 6, 10} {4, 4, 5} {1, 2, 2}

User Jason Hughes
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A triangle is only possible if you can add any two sides and have the sum be larger than the third side. This happens with choice B, C, and D.

With choice A, we have 11+14 = 25 not larger than the third side of 25. So a straight line is possible and it's not possible to draw a triangle with these dimensions.

Answer: Choice A

note: This is using the triangle inequality theorem
User Matt Solnit
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