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Step * of Lemma geo-ab-eq-x

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∀e:BasicGeometry. ∀a,b:Point.  (a ≡ b ⇒ (X = |ab| ∈ Length))
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{ Auto }

1
1. e : BasicGeometry
2. a : Point
3. b : Point
4. a ≡ b
⊢ X = |ab| ∈ Length

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Latex:

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Latex:
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\mforall{}e:BasicGeometry.  \mforall{}a,b:Point.    (a  \mequiv{}  b  {}\mRightarrow{}  (X  =  |ab|))


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Latex:
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