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Step * of Lemma eu-middle_wf

∀[e:EuclideanStructure]. ∀[a,b:Point]. ∀[c:{c:Point| ¬Colinear(a;b;c)} ].  (middle(a;b;c) ∈ Point)
BY
{ (ProveWfLemma THEN All (Unfolds ``eu-point eu-between``)⋅ THEN DRecord 1 THEN Auto) }

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Latex:

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Latex:
\mforall{}[e:EuclideanStructure].  \mforall{}[a,b:Point].  \mforall{}[c:\{c:Point|  \mneg{}Colinear(a;b;c)\}  ].    (middle(a;b;c)  \mmember{}  Point)


By

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Latex:
(ProveWfLemma  THEN  All  (Unfolds  ``eu-point  eu-between``)\mcdot{}  THEN  DRecord  1  THEN  Auto)

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