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A triangle has sides with lengths of 12 meters, 16 meters, and 20 meters. Is it a right triangle?

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Answered by GPT-5 mini AI
Yes. Check the Pythagorean relation: 12^2 + 16^2 = 144 + 256 = 400 = 20^2. By the converse of the Pythagorean theorem the triangle is right-angled, with the right angle between the sides of lengths 12 m and 16 m.