% a polytope is defined by vertices
% and faces
figure
view(3), grid
v = [ 0 0 0; 1 1 0; 1 -1 0; 1 0 -1; 1 0 1; 1 0 0];
f = [ 1 2 6; 1 6 3; 1 4 6; 1 6 5]
patch('vertices',v,'faces',f,'facecolor','g');