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Step * of Lemma eu-cong-tri_wf

∀[e:EuclideanPlane]. ∀[a,b,c,a',b',c':Point].  (Cong3(abc,a'b'c') ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[e:EuclideanPlane].  \mforall{}[a,b,c,a',b',c':Point].    (Cong3(abc,a'b'c')  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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