Step * 1 1 of Lemma geo-add-length-zero


1. BasicGeometry
2. {p:Point| O_X_p} 
⊢ extend Ox by XX ≡ x
BY
(GeneralizeGeoExtends [`a'] THEN Auto) }

1
1. BasicGeometry
2. {p:Point| O_X_p} 
3. {x1:Point| O_x_x1 ∧ xx1 ≅ XX} 
4. xa ≅ XX
5. O_x_a
⊢ a ≡ x


Latex:


Latex:

1.  e  :  BasicGeometry
2.  x  :  \{p:Point|  O\_X\_p\} 
\mvdash{}  extend  Ox  by  XX  \mequiv{}  x


By


Latex:
(GeneralizeGeoExtends  [`a']  THEN  Auto)




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