Sujet : Re: The Circles
De : dohduhdah (at) *nospam* yahoo.com (sobriquet)
Groupes : sci.mathDate : 01. Jul 2025, 22:02:14
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <1041icm$3221b$1@dont-email.me>
References : 1 2 3 4
User-Agent : Mozilla Thunderbird
Op 01/07/2025 om 13:29 schreef sobriquet:
Op 01/07/2025 om 07:16 schreef Ross Finlayson:
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.
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Looks like an ellipse to me:
https://www.desmos.com/3d/syqqdp9cef?translucentSurfaces
Uh.. slight fix:
https://www.desmos.com/3d/om4r4nmoeg?translucentSurfaces