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Step * of Lemma geo-length_functionality

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∀e:BasicGeometry. ∀[a,b,c,d:Point].  (|ab| = |cd| ∈ Length) supposing (b ≡ d and a ≡ c)
BY
{ (InstLemma `geo-congruent-iff-length` [] THEN RepeatFor 5 (ParallelLast') THEN Auto) }

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Latex:

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Latex:
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\mforall{}e:BasicGeometry.  \mforall{}[a,b,c,d:Point].    (|ab|  =  |cd|)  supposing  (b  \mequiv{}  d  and  a  \mequiv{}  c)


By

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Latex:
(InstLemma  `geo-congruent-iff-length`  []  THEN  RepeatFor  5  (ParallelLast')  THEN  Auto)

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