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Topic: Calculating Pi using polygon sides sum / radius
Replies: 40   Last Post: Aug 2, 2013 5:27 PM

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 JT Posts: 1,448 Registered: 4/7/12
Re: Calculating Pi using polygon sides sum / radius
Posted: Aug 2, 2013 6:29 AM
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Den fredagen den 2:e augusti 2013 kl. 01:37:42 UTC+2 skrev Virgil:
> In article <51fae08d\$49\$fuzhry+tra\$mr2ice@news.patriot.net>,
>
> Shmuel (Seymour J.) Metz <spamtrap@library.lspace.org.invalid> wrote:
>
>
>

> > In <virgil-7D1E4A.15192201082013@BIGNEWS.USENETMONSTER.COM>, on
>
> > 08/01/2013
>
> > at 03:19 PM, Virgil <virgil@ligriv.com> said:
>
> >
>
> > >In article <54374a7a-0296-49a7-9ff2-b57692d90583@googlegroups.com>,
>
> > > jonas.thornvall@gmail.com wrote:
>
> >
>
> > >> Well i do not intend to use any trigonometric functions, and honestly i
>
> > >> always thought the ancients, did geometry *the correct way* not losing
>
> > >> precision. By double up vertices and using fractions.
>
> >
>
> > >They did things "the correct way" so throughly, that they
>
> > >couldn't even find the length of the diagagonals of a unit square.
>
> >
>
> > WTF? See, e.g.,
>
> > <http://en.wikipedia.org/wiki/History_of_mathematics#Greek_mathematics>,
>
> > <http://en.wikipedia.org/wiki/Square_root_of_2#Continued_fraction_representati
>
> > on>
>
>
>
> To the Pythagoreans, the diagonal of the unit square was an
>
> incommesurable, not a number.
>
> --

http://www.youtube.com/watch?v=ndN_5IrPOhc

Date Subject Author
7/30/13 JT
7/30/13 JT
7/30/13 Peter Percival
7/30/13 JT
7/30/13 Richard Tobin
7/30/13 JT
7/30/13 Peter Percival
7/30/13 JT
7/30/13 JT
7/30/13 JT
7/30/13 JT
7/31/13 William Elliot
7/31/13 JT
7/31/13 Peter Percival
7/31/13 William Elliot
8/1/13 JT
8/1/13 JT
8/1/13 Virgil
8/1/13 Virgil
8/1/13 JT
8/1/13 JT
8/1/13 Virgil
8/1/13 JT
8/1/13 Virgil
8/1/13 Virgil
8/1/13 Shmuel (Seymour J.) Metz
8/1/13 Virgil
8/2/13 JT
8/2/13 JT
8/2/13 Virgil
8/2/13 JT
8/2/13 Virgil
8/2/13 Brian Q. Hutchings
8/2/13 Brian Q. Hutchings
8/2/13 Virgil
8/2/13 JT
8/2/13 Shmuel (Seymour J.) Metz
8/1/13 JT
8/1/13 Virgil
8/1/13 JT
8/1/13 Virgil

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