x=[ 5.619801  0.000000  -0.064456  5.361616  0.000000  -4.866793  -3.059172 ];
y=[ 2.104427  0.000000  3.595630  6.976655  10.000000  7.549804  5.098809 ];
z=[ 0  0  0  0  0  0  0 ];
tri = [1 2 3; 2 3 7; 3 6 7; 3 5 6; 3 4 5; 1 3 4];
trimesh(tri, x, y, z);