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Step * of Lemma geo-length-flip-eq

∀e:BasicGeometry. ∀[a,b:Point].  |ab| ≡ |ba|
BY
{ EAuto 2 }

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Latex:

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Latex:
\mforall{}e:BasicGeometry.  \mforall{}[a,b:Point].    |ab|  \mequiv{}  |ba|


By

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Latex:
EAuto  2

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