Step * 1 of Lemma stable__geo-opp-side


1. BasicGeometry
2. Point
3. Point
4. Point
5. Point
⊢ Stable{P-AB-Q}
BY
((Unfold `geo-opp-side` THEN Auto) THEN RepeatFor ((BLemma `stable__and` THEN Auto))) }


Latex:


Latex:

1.  e  :  BasicGeometry
2.  A  :  Point
3.  B  :  Point
4.  P  :  Point
5.  Q  :  Point
\mvdash{}  Stable\{P-AB-Q\}


By


Latex:
((Unfold  `geo-opp-side`  0  THEN  Auto)  THEN  RepeatFor  2  ((BLemma  `stable\_\_and`  THEN  Auto)))




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