Re: Circles and ellipses
From: Phlip <phlip_cpp_at_my-deja.com>
Date: 19 Aug 2001 03:00:11 GMT
Message-ID: <9lna3r$nq2_at_dispatch.concentric.net>
>> The entire discussion about whether a circle is an ellipse hinges on how
you
>> define circle and ellipse.
>>
>> If you take the classical definition of an ellipse, from Euclidean
geometry,
>> defined based on the sum of the distances from each point on the ellipse
to
>> the two foci, then a circle is NOT an ellipse. A circle does not have
>> two foci.
>
> Oh yes it does. They're both at the same spot.
Date: 19 Aug 2001 03:00:11 GMT
Message-ID: <9lna3r$nq2_at_dispatch.concentric.net>
Richard MacDonald wrote:
> "David Cressey" <david_at_dcressey.com> wrote in message > news:1kCf7.266$Iw2.14175_at_petpeeve.ziplink.net...
>> The entire discussion about whether a circle is an ellipse hinges on how
you
>> define circle and ellipse.
>>
>> If you take the classical definition of an ellipse, from Euclidean
geometry,
>> defined based on the sum of the distances from each point on the ellipse
to
>> the two foci, then a circle is NOT an ellipse. A circle does not have
>> two foci.
>
> Oh yes it does. They're both at the same spot.
NOOOOOOOO! Abstract philosophy in pragmatic newsgroup(s)!!
EVERYONE'S A MATHEMATICIAN NOW!!!
-- Phlip phlip_cpp_at_my-deja.com ========== http://greencheese.org/SonseOne =========== This signature was automatically generated with Signify v1.06. For this and other cool products, check out http://www.debian.org/Received on Sun Aug 19 2001 - 05:00:11 CEST