A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

precal

  • one year ago

Isosceles Triangle Problem

  • This Question is Closed
  1. precal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. precal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Loser66

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \(\Delta BDE\) and \(\Delta CDF\) are similar. You know this because angles \(\angle ABC\) and \(\angle ACB\) are congruent, and they are both right triangles, so the remaining angles \(\angle BDE\) and \(\angle CDF\) must also be congruent.

  4. precal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Did I mention I can't use a calculator at all?

  5. precal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what do I do now?

  6. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i don't think we need a calculator for this question hmmmm according to what he/she said: we can set up a proportion: i was looking at this link ( http://www.mathplanet.com/education/geometry/similarity/triangles ) : if the triangles are similar then their corresponding sides are proportional

  7. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1444252141871:dw| we can separate both right triangles |dw:1444252199454:dw| \[\huge\rm \frac{ BD }{ CD } = \frac{ DE }{ DF}\] given `DE : DF ` 5:7 and bec BD/CD is equal to DE/DF we can say the ratio of `BD :CD` is also 5:7

  8. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    make sense or not ?? hmmmm

  9. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    BD : CD = 5 :7 BD/CD = 5/7 and we know BD + CD = 48 suppose BD = 5y and CD = 7 y |dw:1444254518735:dw|

  10. 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.