Step * 1 of Lemma euclid-P2


1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. Point@i
5. ¬(A B ∈ Point)
⊢ ∃L:Point. AL=BC
BY
(Prolong ⌜B⌝ ⌜A⌝ `L' ⌜B⌝ ⌜C⌝⋅ THEN Auto) }


Latex:


Latex:

1.  e  :  EuclideanPlane@i'
2.  A  :  Point@i
3.  B  :  Point@i
4.  C  :  Point@i
5.  \mneg{}(A  =  B)
\mvdash{}  \mexists{}L:Point.  AL=BC


By


Latex:
(Prolong  \mkleeneopen{}B\mkleeneclose{}  \mkleeneopen{}A\mkleeneclose{}  `L'  \mkleeneopen{}B\mkleeneclose{}  \mkleeneopen{}C\mkleeneclose{}\mcdot{}  THEN  Auto)




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