Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

janessia Group Title

Find the perimeter of the triangle at the right. Assume that the line segments are tangent to the circle.

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    • 2 years ago
    1 Attachment
  2. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @jim_thompson5910

    • 2 years ago
  3. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @MathLegend

    • 2 years ago
  4. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if you cut the figure up like this |dw:1353204276912:dw|

    • 2 years ago
  5. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    mmmhhhmmm

    • 2 years ago
  6. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you'll see that 2 triangles form

    • 2 years ago
  7. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 2 years ago
  8. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    namely, the smaller triangles inside the larger ones

    • 2 years ago
  9. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    highlighted here|dw:1353204485777:dw|

    • 2 years ago
  10. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ohk

    • 2 years ago
  11. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so if we know this |dw:1353204546161:dw|

    • 2 years ago
  12. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    then we can say this as well |dw:1353204577254:dw|

    • 2 years ago
  13. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ohk yes i see that

    • 2 years ago
  14. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so then can we say that the other side is 9 as well?

    • 2 years ago
  15. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    let me think, I'm looking for justification that the two larger triangles are congruent

    • 2 years ago
  16. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ohk

    • 2 years ago
  17. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh wait, not sure why i didn't see this til now lol

    • 2 years ago
  18. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353204871377:dw|

    • 2 years ago
  19. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    the smaller two triangles in the lower right corner are isosceles triangles

    • 2 years ago
  20. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you have to draw another line to see this if you can't

    • 2 years ago
  21. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so that's why we can add the extra 9 on there the 6 comes from the fact that 9+6 = 15

    • 2 years ago
  22. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so to finish things off, we get this full picture |dw:1353204976827:dw|

    • 2 years ago
  23. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ohk why did u choose 9 and 6... those arent the only things that add together to get 15

    • 2 years ago
  24. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes, but the 9 is locked in, which is why the second segment has to be a 6

    • 2 years ago
  25. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if you don't see what I mean, go back to a previous drawing where I show how the second 9 (the lower 9) shows up

    • 2 years ago
  26. janessia Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    i get it so 58 is the answer

    • 2 years ago
  27. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yep

    • 2 years ago
    • Attachments:

See more questions >>>

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.