It is possible to print out angles for triangles. But I do not think those information are really usefully.
The light paths depends on too many parameters.
To find the refracted light, you need to find the angle of incident (angle between incident beam and the normal vector).
Then, the refracted angle where are index of refraction for two regions.
May I know what kind of information you really want (are looking for)? or what kind of problem you want to solve?
So that I can find better way to help!