Step * of Lemma geo-congruence-identity3

[e:BasicGeometry]. ∀[a,b,c,d:Point].  (a ≡ b) supposing (cd ≅ ab and c ≡ d)
BY
(InstLemma `geo-congruence-identity2` [] THEN RepeatFor (ParallelLast')) }

1
.....antecedent..... 
1. BasicGeometry
2. Point
3. Point
4. Point
5. Point
6. c ≡ d
7. cd ≅ ab
⊢ ab ≅ cd


Latex:


Latex:
\mforall{}[e:BasicGeometry].  \mforall{}[a,b,c,d:Point].    (a  \mequiv{}  b)  supposing  (cd  \00D0  ab  and  c  \mequiv{}  d)


By


Latex:
(InstLemma  `geo-congruence-identity2`  []  THEN  RepeatFor  7  (ParallelLast'))




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