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-%!
-%%BoundingBox: 0 0 236 236
-% M. C. Escher style impossible triangle
-% written by Guy Shaw
-
-% Things that are easy to play with:
-% Position on paper, overall size, and linewidth
-/inch { 72 mul } bind def
-
-gsave
-
-.15 inch 0 translate
-3 inch dup scale
-1 3 inch div setlinewidth
-
-% Thickness parameter:
-% /Thick is the thickness of the structural members of the triange,
-% as a fraction of the height of the triangle.
-% Reasonable looking impossible triangles can be obtained with Thick <= 1/6.
-% right at /Thick == 1/6, there is no space left inside the triangle.
-% /Thick > 1/6 yields bizarre, but not very interesting results.
-% /Thick < 1/20 is less interesting, because the "impossibility"
-% is not so striking when the structural members are that thin.
-% A good "standard" value is 1/8.
-
-/Thick 1 8 div def
-
-% You would not normally want to change anything that follows.
-
-/Tall 1 def
-/HalfThick Thick .5 mul def
-
-newpath
- HalfThick Thick moveto
- Thick 0 lineto
- 1 Thick sub 0 lineto
- 1 HalfThick sub Thick lineto
- .5 HalfThick add Tall Thick sub lineto
-
- 1 Thick sub 0 moveto
- .5 HalfThick add Tall 3 Thick mul sub lineto
- Thick 3 mul Thick 2 mul lineto
-
- 1 Thick 2.5 mul sub Thick moveto
- .5 Tall Thick 4 mul sub lineto
-stroke
-
-newpath
- HalfThick Thick moveto
- 1 Thick 2.5 mul sub Thick lineto
- HalfThick neg Thick rlineto
- Thick Thick add Thick Thick add lineto
- .5 HalfThick add Tall Thick sub lineto
- Thick neg 0 rlineto
- closepath
-fill
-grestore
-/Helvetica findfont 30 scalefont setfont
-0 5 moveto (L) show
-3.1 inch 5 moveto (R) show
-1.6 inch 2.7 inch moveto (T) show
-showpage
-