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Subject: "Delian problem"     Previous Topic | Next Topic
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Conferences The CTK Exchange High school Topic #326
Reading Topic #326
bitrak
Member since Jul-14-05
Jul-17-05, 09:15 AM (EST)
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"Delian problem"
 
   Delian problem is not solved.Segment x8-x12 is 2sqrt2-2 but no
2-4^(1/3). Proof on the site
https://www.cut-the-knot.org/do_you_know/Delian.shtml
is apsolutly wrong.
I can send my proof if anyone like that.
So,Duplication of the Cube with straight edge and compass only is impossible.


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alexbadmin
Charter Member
1581 posts
Jul-17-05, 09:36 AM (EST)
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1. "RE: Delian problem"
In response to message #0
 
   >Delian problem is not solved.Segment x8-x12 is 2sqrt2-2 but
>no 2-4^(1/3).
Proof on the site
>https://www.cut-the-knot.org/do_you_know/Delian.shtml
>is apsolutly wrong.

Yes, of course.

>I can send my proof if anyone like that.

A proof of what? That the one at the above link is wrong? You can post it here.

>So,Duplication of the Cube with straight edge and compass
>only is impossible.

Yes, no doubt about that. It was shown at the very first link at the page you refer to:

https://www.cut-the-knot.org/arithmetic/cubic.shtml#cube


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