Step * 1 1 of Lemma geo-midpoint-diagonals-between

.....antecedent..... 
1. BasicGeometry
2. Point
3. Point
4. Point
5. Point
6. P' Point
7. Q' Point
8. R' Point
9. P=A=P'
10. R=A=R'
11. Q=A=Q'
12. P_Q_R
⊢ PQ ≅ P'Q'
BY
(InstLemma `geo-midpoint-diagonals-congruent` [⌜e⌝;⌜A⌝;⌜P'⌝;⌜Q'⌝;⌜P⌝;⌜Q⌝]⋅ THENA Auto) }

1
1. BasicGeometry
2. Point
3. Point
4. Point
5. Point
6. P' Point
7. Q' Point
8. R' Point
9. P=A=P'
10. R=A=R'
11. Q=A=Q'
12. P_Q_R
13. P'Q' ≅ PQ
⊢ PQ ≅ P'Q'


Latex:


Latex:
.....antecedent..... 
1.  e  :  BasicGeometry
2.  A  :  Point
3.  P  :  Point
4.  Q  :  Point
5.  R  :  Point
6.  P'  :  Point
7.  Q'  :  Point
8.  R'  :  Point
9.  P=A=P'
10.  R=A=R'
11.  Q=A=Q'
12.  P\_Q\_R
\mvdash{}  PQ  \00D0  P'Q'


By


Latex:
(InstLemma  `geo-midpoint-diagonals-congruent`  [\mkleeneopen{}e\mkleeneclose{};\mkleeneopen{}A\mkleeneclose{};\mkleeneopen{}P'\mkleeneclose{};\mkleeneopen{}Q'\mkleeneclose{};\mkleeneopen{}P\mkleeneclose{};\mkleeneopen{}Q\mkleeneclose{}]\mcdot{}  THENA  Auto)




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