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OpenSessame

  • 2 years ago

A triangle has side lengths 10, 15, and 7. Is the triangle acute, obtuse, or right? Explain

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  1. OpenSessame
    • 2 years ago
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    MY ANSWER: Obtuse, because to find if the triangle is right, acute or obtuse you use the Pythagorean Theorem. You plug in the two smaller numbers in the equation to it looks like this, 7^2+10^2=12.2. Since the hypotenuse given in the problem is larger than the hypotenuse you get in the theorem it is obtuse. Can someone explain what I did wrong?

  2. shaagasda
    • 2 years ago
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    You're correct.

  3. OpenSessame
    • 2 years ago
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    But my teacher said it was wrong...

  4. shaagasda
    • 2 years ago
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    The answer would be awkward, I know.

  5. OpenSessame
    • 2 years ago
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    Awkward?

  6. shaagasda
    • 2 years ago
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    Lol... tell your teacher to look again.

  7. OpenSessame
    • 2 years ago
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    I did, and she still said it was wrong. That is why I am asking for help.

  8. shaagasda
    • 2 years ago
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    Stop cheating.

  9. shaagasda
    • 2 years ago
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    Cheating is so pathetic, seriously.

  10. shaagasda
    • 2 years ago
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    Don't cheat, you learn nothing by cheating.

  11. OpenSessame
    • 2 years ago
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    I'm not?

  12. OpenSessame
    • 2 years ago
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    @e.mccormick Can you help?

  13. shaagasda
    • 2 years ago
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    @e.mccormick Don't help him, he's cheating.

  14. OpenSessame
    • 2 years ago
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    I'm not cheating, so if you can't help please leave this thread alone.

  15. e.mccormick
    • 2 years ago
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    The only thing I see wrong is ytour math: \(7^2+10^2=12.2\) is not true. \(7^2+10^2=149\) is true and \(15^2=225\) is true and \(\sqrt{7^2+10^2}\approx12.2\) is true.

  16. OpenSessame
    • 2 years ago
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    Okay, thats it?

  17. e.mccormick
    • 2 years ago
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    If that is the exact answer you submitted, yes, that is why it would be marked wrong. you did not actually apply the Pythagorean Theorem in that equation. You came close, but forgot the root sign!

  18. OpenSessame
    • 2 years ago
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    Oh okay! Thanks!

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