A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

classify each triangle as acute,right,or obtuse. the numbers are 3,8,10

  • This Question is Closed
  1. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do you know what each type of triangle means?

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes basically the size of the angles

  3. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Right. So if one of the angles is 90 degrees, it is a right triangle. If one of the angles is greater than 90 degrees, it is an obtuse triangle. Otherwise, it is an acute triangle (because all three angles are less than 90 degrees).

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    wat? im supposed to see what 3,8,10 make as a triangle its geometry

  5. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok, so the side lengths are 3 8 and 10.

  6. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The easiest thing to check first is this: right triangles have sides that are related by the pythagorean theorem. So \(a^2 + b^2 = c^2\). \(c\) is always the hypotenuse, which is the longest side. Do these three numbers work in that equation?

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yea but it does not have a triangle its just ask question 7. 3,8,10 and its asking me the lenghts of the sides of a triangle are given.Classify each triangle as acute,right,or obtuse.

  8. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I understand that. The first step is to check whether it's a right triangle by checking whether those side lengths work in the pythagorean theorem. Since 10 is the longest side, it would have to be the hypotenuse. So is it true that \(3^2 + 8^2 = 10^2\)?

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  10. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \(3^2 = 9\), \(8^2 = 64\), and \(10^2 = 100\). So 9 + 64 = 100?

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok yes

  12. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No, 9 + 64 is 73, which is not equal to 100. So this isn't a right triangle.

  13. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So the next step is, do a quick sketch on paper of what the triangle would look like given that 8 and 10 are similar in length and 3 is very short. Does it look like it has an obtuse angle?

  14. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no

  15. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Right. So it would be an acute triangle.

  16. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i kind of remember something that my teacher said about it that if its equal then its right if its less its acute if its more then obtuse is that right?

  17. shadowfiend
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That sounds right.

  18. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thank you

  19. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.