Step
*
of Lemma
geo-construction-unicity-from-first
∀e:BasicGeometry-. ∀[Q,A,X,Y:Point]. (X ≡ Y) supposing (QY ≅ QX and Q_A_X and Q_A_Y and Q ≠ A)
BY
{ (Auto
THEN (InstLemma `geo-five-segment` [⌜e⌝;⌜Q⌝;⌜A⌝;⌜X⌝;⌜Y⌝;⌜Q⌝;⌜A⌝;⌜X⌝;⌜X⌝]⋅
THENM (FLemma `geo-congruence-identity-sym` [-1] THEN Auto)
)
THEN Auto) }
1
.....antecedent.....
1. e : BasicGeometry-
2. Q : Point
3. A : Point
4. X : Point
5. Y : Point
6. Q ≠ A
7. Q_A_Y
8. Q_A_X
9. QY ≅ QX
⊢ AY ≅ AX
Latex:
Latex:
\mforall{}e:BasicGeometry-. \mforall{}[Q,A,X,Y:Point]. (X \mequiv{} Y) supposing (QY \mcong{} QX and Q\_A\_X and Q\_A\_Y and Q \mneq{} A)
By
Latex:
(Auto
THEN (InstLemma `geo-five-segment` [\mkleeneopen{}e\mkleeneclose{};\mkleeneopen{}Q\mkleeneclose{};\mkleeneopen{}A\mkleeneclose{};\mkleeneopen{}X\mkleeneclose{};\mkleeneopen{}Y\mkleeneclose{};\mkleeneopen{}Q\mkleeneclose{};\mkleeneopen{}A\mkleeneclose{};\mkleeneopen{}X\mkleeneclose{};\mkleeneopen{}X\mkleeneclose{}]\mcdot{}
THENM (FLemma `geo-congruence-identity-sym` [-1] THEN Auto)
)
THEN Auto)
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