#then in this screenshot, shouldent the answer be AD^2 : DC^2 (unanswered! please help)

19 messages · Page 1 of 1 (latest)

valid mirage
#

ratio of areas should of ratio of corresponding sides^2 right?

proper pastureBOT
#
  1. Ask your question and show the work you've done so far. If you've posted a screenshot of a question, specify which part you need help with.
  2. Wait patiently for a helper to come along.
  3. Once someone helps you, say thank you and close the thread with:
    +close
    
  4. Feel free to nominate the person for helper of the week in #helper-nominations
  5. Do not ping the mods, unless someone is breaking the rules.
  6. If you're happy with the help you got here, and the server overall, you can contribute financially as well:
livid coral
#

@valid mirage
Why is angle ABD = angle ACB

#

No, I mean the first line

valid mirage
#

because AB is a tangent of the circle

livid coral
#

I don't see which ones are the parallel lines and which one is the segment
Or maybe I am misunderstanding

valid mirage
#

i appreciate your time but quite frankly i’m not here to teach math

#

i’ll ask someone else

#

good day!

#

then in this screenshot, shouldent the answer be AD^2 : DC^2 (unanswered! please help)

livid coral
#

It's me again sorry
The similar triangles are ABD and ACB, not ABD and BCD
The ratio of the area of the two similar triangles is indeed 4 but that is not what the problem is asking for
AD and DC aren't corresponding

valid mirage
#

they are just two triangles separated from a bigger one

#

thanks for your reminder!