Step
*
of Lemma
eu-seg-proper_wf
∀[e:EuclideanStructure]. ∀[s:Segment].  (proper(s) ∈ ℙ)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[e:EuclideanStructure].  \mforall{}[s:Segment].    (proper(s)  \mmember{}  \mBbbP{})
By
Latex:
ProveWfLemma
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