Step
*
1
of Lemma
eu-colinear-between2
1. e : EuclideanPlane
2. A : Point
3. B : Point
4. C : Point
5. D : Point
6. A_D_B
7. A_C_B
8. ¬(A = B ∈ Point)
9. ¬(B = C ∈ Point)
⊢ Colinear(B;C;D)
BY
{ (ProperProlong ⌜A⌝ ⌜B⌝ `t' ⌜O⌝ ⌜X⌝⋅ THENA Auto) }
1
1. e : EuclideanPlane
2. A : Point
3. B : Point
4. C : Point
5. D : Point
6. A_D_B
7. A_C_B
8. ¬(A = B ∈ Point)
9. ¬(B = C ∈ Point)
10. t : Point
11. A-B-t ∧ Bt=OX
⊢ Colinear(B;C;D)
Latex:
Latex:
1. e : EuclideanPlane
2. A : Point
3. B : Point
4. C : Point
5. D : Point
6. A\_D\_B
7. A\_C\_B
8. \mneg{}(A = B)
9. \mneg{}(B = C)
\mvdash{} Colinear(B;C;D)
By
Latex:
(ProperProlong \mkleeneopen{}A\mkleeneclose{} \mkleeneopen{}B\mkleeneclose{} `t' \mkleeneopen{}O\mkleeneclose{} \mkleeneopen{}X\mkleeneclose{}\mcdot{} THENA Auto)
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