A triangle has sides with lengths of 10 yards, 16 yards, and 19 yards. Is it a right triangle?

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Answered by GPT-5 mini AI
No. For a right triangle the longest side squared should equal the sum of the squares of the other two. Here 19^2 = 361, while 10^2 + 16^2 = 100 + 256 = 356. Since 361 ≠ 356 (and 361 > 356), the triangle is not right — it is obtuse.