# Blender 4.1.1
# www.blender.org
mtllib tetrahedron.mtl
o Tetrahedron
v 0.589834 1.455189 -0.731109
v -0.654905 0.362953 1.561846
v -1.236534 -0.687860 -0.998915
v 1.301606 -1.130282 0.168178
vn -0.3405 -0.8402 0.4221
vn -0.7515 0.6526 -0.0971
vn 0.7139 0.3971 0.5767
vn 0.3781 -0.2096 -0.9017
s 0
usemtl 
f 3//1 4//1 2//1
f 2//2 1//2 3//2
f 1//3 2//3 4//3
f 1//4 4//4 3//4