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Step * of Lemma geo-midpoint-trivial

∀e:BasicGeometry. ∀a:Point.  a=a=a
BY
{ (Unfold `geo-midpoint` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}e:BasicGeometry.  \mforall{}a:Point.    a=a=a


By

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Latex:
(Unfold  `geo-midpoint`  0  THEN  Auto)

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