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A triangle has sides with lengths of 13 centimeters, 84 centimeters, and 85 centimeters. Is it a right triangle?
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A triangle has sides with lengths of 13 centimeters, 84 centimeters, and 85 centimeters. Is it a right triangle?

User Radomaj
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Yes. It’s a right triangle.
If a^2 + b^2 = c^2, then it’s a right triangle! If it’s less than c^2, it’s obtuse and if it’s greater than c^, it’s acute.
User John Heyer
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