Definable real number: Difference between revisions

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Undid revision 977729683 by GünniX (talk) inconsistent with established reference style for this article, better just to inline the note which is not in any case a reference and does not belong in the references section
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[[File:Square root of 2 triangle.svg|thumb|200px|The [[square root of 2]] is equal to the length of the [[hypotenuse]] of a [[right triangle]] with legs of length 1 and is therefore a '''constructible number''']]