"Source: Text/Geometry/Polyhedra.text";
"Line: 1902";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/Polyhedra.text, line: 1902
// Example: H156E14 ()
print "Example: H156E14";
ei := GetEchoInput();
SetEchoInput(true);
P:=Polytope([[1,-2,3],[2,-4,-1],[5,-4,1],[-3,-3,-3]]);
width,us:=Width(P);
width;
assert $1 eq 1;
us;
u:=Representative(us);
[u * v : v in Vertices(P)];
NumberOfInteriorPoints(P);
assert $1 eq 0;
phi:=ChangeBasis(u);
DefiningMatrix(phi);
Image(phi,P);
SetEchoInput(ei);
