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Step * of Lemma right-angle-trivial2

∀e:BasicGeometry. ∀a,b:Point.  Rbba
BY
{ (Auto THEN BLemma `right-angle-symmetry` THEN Auto) }

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Latex:

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Latex:
\mforall{}e:BasicGeometry.  \mforall{}a,b:Point.    Rbba


By

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Latex:
(Auto  THEN  BLemma  `right-angle-symmetry`  THEN  Auto)

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