Template:Did you know nominations/Tomahawk (geometry)

Tomahawk (geometry)

 * ... that a tomahawk may be used to split an angle into three equal parts, despite the impossibility of doing so with compass and straightedge?
 * Reviewed: Ancillary copyright

5x expanded by David Eppstein (talk). Self nom at 01:17, 13 September 2012 (UTC)


 * I will review this.
 * >3500 characters, was expanded from about 450 characters (sufficient)
 * Expanded past 2 days
 * Cites inline
 * Hook is definitely interesting to me, and brief enough
 * QPQ done


 * One suggestion after this first look-through: could we have a ref on "The reason for this is that placing the constructed tomahawk into the required position is a form of neusis that is not allowed in compass and straightedge constructions"?
 * More review to come. Chris857 (talk) 01:45, 13 September 2012 (UTC)
 * I was intending "neusis" here in its dictionary meaning rather than anything specific to the tomahawk. And I don't think there is a source that uses that exact word in conjunction with the tomahawk (but we don't usually require sources for vocabulary, only for meaning). It is an obscure word, though, and not all sources explain it very clearly, so I added a source explaining in more depth what it means in a way that shows how it fits this contruction. —David Eppstein (talk) 03:06, 13 September 2012 (UTC)
 * I detect no copyvio in sources easily available to me.
 * AGF on offline and French sources
 * Pictogram voting keep.svg Everything is good to go. When this is promoted, one of the pictures would be fine to use in the hook, if desired.Chris857 (talk) 02:40, 15 September 2012 (UTC)