Respuesta :

harrislui321

Answer:

Step-by-step explanation:

No it is not because it's not even a right triangle

devishri1977

Answer:

No, they are not Pythagorean triple

Step-by-step explanation:

Pythagorean's theorem,

Hypotenuse² = base² + altitude²

              23² =  21² + 9²

             529 = 441 + 81

            529 ≠ 522

As 9 , 21 , 23 doesn't satisfies Pythagorean theorem, they are not Pythagorean triple

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