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Step * of Lemma geo-isosceles_wf

∀[g1:EuclideanPlane]. ∀[a,b,c:Point].  (ISOΔ(a;b;c) ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[g1:EuclideanPlane].  \mforall{}[a,b,c:Point].    (ISO\mDelta{}(a;b;c)  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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