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 \theta_1(angle between incident beam and the normal vector).
Then, the refracted angle \theta_2=\frac{n_1}{n_2}\theta_1 where n_1,n_2 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!