It's a bit hard to tell you anything when you give us the solid version, could you try one that isn't showing as solid. Technically even this version isn't a solid,it should really be defined and a void surrounded by an infinite nothingness. This is because you have the faces reversed, meaning the shape is inside-out. When viewed in Monochrome you should only see white faces, the blue/grey faces are the back or internal faces.

I can't get my head around this - can you post an image or two... The Protractor tool makes guide-lines at exact angle [degrees or A:B]. It's probably quite straightforward but can you show us some steps - start/end condition desired etc etc...