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Prove that the points (2, 3), (-4, -6) and (1, 3/2) do not form a triangle.

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Let A(2, 3), B(-4, -6) and C(1, 3/2) be the given points

We know that for a triangle sum of two sides is greater than the third side Here AC+BC  is not greater than AB.

Therefore, ABC is not triangle

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