SOLUTION: A triangle has side lengths of 8cm, 5cm and 9 cm is the triangle a right triangle

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Question 783472: A triangle has side lengths of 8cm, 5cm and 9 cm is the triangle a right triangle

Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
In a right triangle a%5E2+%2B+b%5E2+=+c%5E2 where a and b are the legs, and c is the hypotenuse, which is the longest side.


Check if 5%5E2+%2B+8%5E2+=+9%5E2


25 + 64 = 89, which is not 81 (9 squared). This is not a right triangle.


Pyhtagorean Triples are sets of numbers, side lengths, that make up right triangles. If you memorize the first few Pythagorean Triples, problems like this are easy.