teehartinegr
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  • 17-08-2020
  • Mathematics
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A triangle has sides of lengths 9, 7, and 12. Is it a right triangle? Explain.

A triangle has sides of lengths 9 7 and 12 Is it a right triangle Explain class=

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Hrishii
Hrishii Hrishii
  • 17-08-2020

Answer:

No, [tex] 9^2 +7^2 \neq 12^2 [/tex]

Step-by-step explanation:

[tex] 9^2 +7^2 = 81+ 49 =130...(1)[/tex]

[tex] 12^2 = 144...(2)[/tex]

From equations (1) & (2) it is obvious that:

[tex] 9^2 +7^2 \neq 12^2 [/tex]

Thus, the given is not a right triangle.

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