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Step * of Lemma geo-colinear-same-side2

∀e:BasicGeometry. ∀[A,B,C,D:Point].  (Colinear(A;C;D)) supposing (A ≠ B and A_B_C and A_B_D)
BY
{ (InstLemma `geo-between-same-side` []
   THEN RepeatFor 8 (ParallelLast')
   THEN Auto
   THEN (D 0 THENA Auto)
   THEN D -2
   THEN Auto) }

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Latex:

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Latex:
\mforall{}e:BasicGeometry.  \mforall{}[A,B,C,D:Point].    (Colinear(A;C;D))  supposing  (A  \mneq{}  B  and  A\_B\_C  and  A\_B\_D)


By

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Latex:
(InstLemma  `geo-between-same-side`  []
  THEN  RepeatFor  8  (ParallelLast')
  THEN  Auto
  THEN  (D  0  THENA  Auto)
  THEN  D  -2
  THEN  Auto)

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