Sujet : Re: The Circles
De : chris.m.thomasson.1 (at) *nospam* gmail.com (Chris M. Thomasson)
Groupes : sci.mathDate : 01. Jul 2025, 20:24:07
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <1041ckn$30u9b$2@dont-email.me>
References : 1 2 3 4
User-Agent : Mozilla Thunderbird
On 7/1/2025 4:43 AM, FromTheRafters wrote:
Ross Finlayson was thinking very hard :
On 06/30/2025 11:29 AM, Chris M. Thomasson wrote:
On 6/28/2025 8:38 PM, Ross Finlayson wrote:
Oh, been a while, figure I'll post.
[...]
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An ellipse is nothing more than a circle projected in 3d? ;^)
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That's frivolous.
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An ellipse is constructible from a loop of string and two pegs.
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An image of a circle onto a plane as projected from
an incident angle via 3D: is not an ellipse, either.
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Ask your shadow.
It can be, it depends upon the angle. Think of the plane intersecting the cone (or cylinder) the circular projection creates in 3d space.
Right. I think that any ellipse in 2d, has a rotated circle counterpart in a 3d projection... Okay? Or just kookville?
The Circles
Re: The Circles