Step * of Lemma Euclid-Prop27

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e:EuclideanPlane. ∀a,b,c,d,x,y:Point.
  (((Colinear(x;a;b) ∧ Colinear(y;c;d)) ∧ (a b ∧ d) ∧ leftof yx ∧ leftof xy ∧ axy ≅a cyx)
   geo-parallel-points(e;a;b;c;d))
BY
(Auto THEN Unfold `geo-parallel-points` THEN (GenRepD THEN Auto) THEN THEN Auto) }

1
1. EuclideanPlane
2. Point
3. Point
4. Point
5. Point
6. Point
7. Point
8. Colinear(x;a;b)
9. Colinear(y;c;d)
10. b
11. d
12. leftof yx
13. leftof xy
14. axy ≅a cyx
15. ∃x,y:{z:Point| Colinear(z;a;b)} (x leftof cd ∧ leftof dc)
⊢ False


Latex:


Latex:
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\mforall{}e:EuclideanPlane.  \mforall{}a,b,c,d,x,y:Point.
    (((Colinear(x;a;b)  \mwedge{}  Colinear(y;c;d))  \mwedge{}  (a  \#  b  \mwedge{}  c  \#  d)  \mwedge{}  a  leftof  yx  \mwedge{}  c  leftof  xy  \mwedge{}  axy  \mcong{}\msuba{}  cyx)
    {}\mRightarrow{}  geo-parallel-points(e;a;b;c;d))


By


Latex:
(Auto  THEN  Unfold  `geo-parallel-points`  0  THEN  (GenRepD  THEN  Auto)  THEN  D  0  THEN  Auto)




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