How many axes of rotational symmetry are there for the following object? Also, is there an algorithmic procedure for finding the axes of rotational symmetry for a general 3D object?
Here are all the objects I am interested in: https://p3d.in/u/juliuscaesar/p883t
It is probably difficult to communicate verbally the axes. But if you download the associated STL files, you can see the XYZ coordinate frame (e.g. using Meshlab software) and thus define the axises in this XYZ frame.