Step * of Lemma geo-lt-angle-in-half-plane-implies-left

e:EuclideanPlane. ∀w,x,y,z:Point.  (xyz < wyz  leftof yz  leftof yz  leftof yx)
BY
Auto }

1
1. EuclideanPlane
2. Point
3. Point
4. Point
5. Point
6. xyz < wyz
7. leftof yz
8. leftof yz
⊢ leftof yx


Latex:


Latex:
\mforall{}e:EuclideanPlane.  \mforall{}w,x,y,z:Point.    (xyz  <  wyz  {}\mRightarrow{}  w  leftof  yz  {}\mRightarrow{}  x  leftof  yz  {}\mRightarrow{}  w  leftof  yx)


By


Latex:
Auto




Home Index