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Step * of Lemma length-seg-eq

∀[e:BasicGeometry]. ∀[a,b:Point].  |ab| ≡ |ab|
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{ Auto }

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Latex:

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


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Latex:
Auto

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