Step
*
1
1
of Lemma
left-right-sep
1. g : OrientedPlane
2. a : Point
3. b : Point
4. c : Point
5. d : Point
6. a leftof cd
7. b leftof dc
8. x : Point
9. Colinear(d;c;x)
10. b_x_a
11. a # dc
⊢ a ≠ x
BY
{ (Assert Colinear(x;d;c) BY
(RepeatFor 2 (ParallelOp -3) THEN Auto)) }
1
1. g : OrientedPlane
2. a : Point
3. b : Point
4. c : Point
5. d : Point
6. a leftof cd
7. b leftof dc
8. x : Point
9. Colinear(d;c;x)
10. b_x_a
11. a # dc
12. Colinear(x;d;c)
⊢ a ≠ x
Latex:
Latex:
1. g : OrientedPlane
2. a : Point
3. b : Point
4. c : Point
5. d : Point
6. a leftof cd
7. b leftof dc
8. x : Point
9. Colinear(d;c;x)
10. b\_x\_a
11. a \# dc
\mvdash{} a \mneq{} x
By
Latex:
(Assert Colinear(x;d;c) BY
(RepeatFor 2 (ParallelOp -3) THEN Auto))
Home
Index