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Step * of Lemma geo-same-side_wf

∀[e:BasicGeometry]. ∀[A,B,P,Q:Point].  (P,Q-AB ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[e:BasicGeometry].  \mforall{}[A,B,P,Q:Point].    (P,Q-AB  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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