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Step * 3 of Lemma sq_stable__geo-left

.....antecedent..... 
1. g : EuclideanPlane
⊢ ∀a,b,c:Point.  (a # bc ⇒ (¬Colinear(a;b;c)))
BY
{ (D -1 THEN (Unhide THENA Auto)) }

1
1. g : EuclideanPlaneStructure
2. BasicGeometryAxioms(g)
⊢ ∀a,b,c:Point.  (a # bc ⇒ (¬Colinear(a;b;c)))

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Latex:

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Latex:
.....antecedent..... 
1.  g  :  EuclideanPlane
\mvdash{}  \mforall{}a,b,c:Point.    (a  \#  bc  {}\mRightarrow{}  (\mneg{}Colinear(a;b;c)))


By

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Latex:
(D  -1  THEN  (Unhide  THENA  Auto))

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