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Step * of Lemma geo-cong-angle_wf

∀[e:BasicGeometry]. ∀[a,b,c,x,y,z:Point].  (abc ≅a xyz ∈ ℙ)
BY
{ TACTIC:ProveWfLemma }

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Latex:

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Latex:
\mforall{}[e:BasicGeometry].  \mforall{}[a,b,c,x,y,z:Point].    (abc  \mcong{}\msuba{}  xyz  \mmember{}  \mBbbP{})


By

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Latex:
TACTIC:ProveWfLemma

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