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Topic: squaring a circle
Replies: 18   Last Post: Jan 3, 2012 12:22 PM

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 Daniel W. Johnson Posts: 433 Registered: 12/10/04
Re: squaring a circle
Posted: Dec 14, 2003 6:04 PM
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Russell Harper <rharper1661@rogers.com> wrote:

> Just wondering, is it possible to create these tools using a compass and a
> straightedge (and maybe a pair of scissors)? /R

Well, one angle trisection requires a straightedge that you can mark; it
is then slid along a circle and line. (That not being one of the
operations described by Euclid, it has no impact on the proof of
impossibility.) I've also seen a drawing of an angle trisection device
with fairly simple moving parts.
--
Daniel W. Johnson
panoptes@iquest.net
http://members.iquest.net/~panoptes/
039 53 36 N / 086 11 55 W

Date Subject Author
12/13/03 vsvasan
12/13/03 Mensanator
12/13/03 Rick Decker
12/13/03 John Schutkeker
12/13/03 magidin@math.berkeley.edu
12/14/03 David McAnally
12/13/03 Oscar Lanzi III
12/14/03 Keith Ramsay
12/14/03 Russell Harper
12/14/03 Daniel W. Johnson
12/14/03 Oscar Lanzi III
12/15/03 Daniel W. Johnson
12/14/03 Bobby
12/14/03 W. Dale Hall
12/14/03 Eur Ing Panagiotis Stefanides
12/14/03 Eur Ing Panagiotis Stefanides
12/18/03 Mensanator
1/3/12 Eur Ing Panagiotis Stefanides
12/14/03 Prai Jei

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