Step * of Lemma geo-be-end-eq

e:BasicGeometry. ∀a,b,c:Point.  (a_b_c  ab ≅ ac  b ≡ c)
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1
1. BasicGeometry
2. Point
3. Point
4. Point
5. a_b_c
6. ab ≅ ac
⊢ b ≡ c


Latex:


Latex:
\mforall{}e:BasicGeometry.  \mforall{}a,b,c:Point.    (a\_b\_c  {}\mRightarrow{}  ab  \mcong{}  ac  {}\mRightarrow{}  b  \mequiv{}  c)


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Latex:
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