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Step * of Lemma geo-length-property

∀g:EuclideanPlane. ∀a,b:Point.  ab ≅ X|ab|
BY
{ (Auto THEN Unfold `geo-length` 0 THEN Reduce 0 THEN GenConclTerm ⌜extend OX by ab⌝⋅ THEN Auto) }

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Latex:

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Latex:
\mforall{}g:EuclideanPlane.  \mforall{}a,b:Point.    ab  \mcong{}  X|ab|


By

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Latex:
(Auto  THEN  Unfold  `geo-length`  0  THEN  Reduce  0  THEN  GenConclTerm  \mkleeneopen{}extend  OX  by  ab\mkleeneclose{}\mcdot{}  THEN  Auto)

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