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Step * 7 of Lemma r2-basic-geo-axioms


∀a,b,c:Point.  (a leftof bc ⇒ b leftof ca)
BY
{ (UnfoldGeoAbbreviations 0 THEN Auto THEN ParallelLast THEN RWO "r2-det-symmetry<" 0 THEN Auto) }

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Latex:

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Latex:

\mforall{}a,b,c:Point.    (a  leftof  bc  {}\mRightarrow{}  b  leftof  ca)


By

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Latex:
(UnfoldGeoAbbreviations  0  THEN  Auto  THEN  ParallelLast  THEN  RWO  "r2-det-symmetry<"  0  THEN  Auto)

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