CTK Exchange
Front Page
Movie shortcuts
Personal info
Awards
Reciprocal links
Terms of use
Privacy Policy

Interactive Activities

Cut The Knot!
MSET99 Talk
Games & Puzzles
Arithmetic/Algebra
Geometry
Probability
Eye Opener
Analog Gadgets
Inventor's Paradox
Did you know?...
Proofs
Math as Language
Things Impossible
My Logo
Math Poll
Other Math sit's
Guest book
News sit's

Recommend this site

Manifesto: what CTK is about |Store| Search CTK Buying a book is a commitment to learning Table of content Things you can find on CTK Chronology of updates Email to Cut The Knot Recommend this page

CTK Exchange

Subject: "triangle ratios w/ unknown sides"     Previous Topic | Next Topic
Printer-friendly copy     Email this topic to a friend    
Conferences The CTK Exchange High school Topic #302
Reading Topic #302
Ian Barkley
guest
Nov-08-04, 04:33 PM (EST)
 
"triangle ratios w/ unknown sides"
 
   I've been comtempating this question for about a week, and I was wondering if anyone had an answer to it.I have a right triange ABC, with known side lengths and angles. now I arbitrarily draw a line through the hypotenuse and one of the sides, parallel to the other side. In a sense, I have a smaller triangle w/in a larger. my question is, how can i find the side lengths of the smaller triangle?

I understand the relations w.r.t. to the ratios of the two triangles, but in every example I've came across, one of the side lengths of the smaller triangle is given. With my question, no lengths are given.

I've tried to use cerva's theorem to find some workaround ratio, but i haven't been successfull...any aid is appreciated...
thanks,

Ian Barkley


  Alert | IP Printer-friendly page | Reply | Reply With Quote | Top
Dnana
guest
Nov-16-04, 09:31 AM (EST)
 
1. "triangle ratios w/ unknown sides"
In response to message #0
 
   Hi Ian,

When u draw arbitrarily a line cutting hypotenuse & another side //l to third side, it is impossible to find the sides of the smaller triangle. Until & otherwise u give the position of that arbitrary //l line from the big triangles parallel side, its not possible to find the sides of smaller triangle.

Dnana

>I've been comtempating this question for about a week, and I
>was wondering if anyone had an answer to it.I have a right
>triange ABC, with known side lengths and angles. now I
>arbitrarily draw a line through the hypotenuse and one of
>the sides, parallel to the other side. In a sense, I have a
>smaller triangle w/in a larger. my question is, how can i
>find the side lengths of the smaller triangle?
>
>I understand the relations w.r.t. to the ratios of the two
>triangles, but in every example I've came across, one of the
>side lengths of the smaller triangle is given. With my
>question, no lengths are given.
>
>I've tried to use cerva's theorem to find some workaround
>ratio, but i haven't been successfull...any aid is
>appreciated...
>thanks,
>
>Ian Barkley


  Alert | IP Printer-friendly page | Reply | Reply With Quote | Top

Conferences | Forums | Topics | Previous Topic | Next Topic

You may be curious to have a look at the old CTK Exchange archive.
Please do not post there.

|Front page| |Contents|

Copyright © 1996-2018 Alexander Bogomolny

71535051

Search:
Keywords:

Google
Web CTK