In our last tutorial we drew a 2D triangle. That was good, but this time we are going to create our very first 3D object… a cube. And to show that it really is 3D, we are going to rotate it about the x, y and z axis. Remember that all 3D objects are made up from polygons, normally triangles. So for our cube, we will use 12 triangles (2 for each face).