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Step * of Lemma geo-seg-congruent_weakening

∀e:BasicGeometry. ∀[s1,s2:geo-segment(e)].  geo-seg-congruent(e; s1; s2) supposing s1 = s2 ∈ geo-segment(e)
BY
{ (Auto THEN All (Unfold `geo-seg-congruent`) THEN HypSubst' (-1) 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}e:BasicGeometry.  \mforall{}[s1,s2:geo-segment(e)].    geo-seg-congruent(e;  s1;  s2)  supposing  s1  =  s2


By

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Latex:
(Auto  THEN  All  (Unfold  `geo-seg-congruent`)  THEN  HypSubst'  (-1)  0  THEN  Auto)

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