ah. I fact, an architect is what Im going to school to be.....and....while you do need to know some engineering (basic engineering....we leave the real engineering to the engineers, who need a LOT more math) most anything youll ever need to know can be looked up

as for the angles of a church ceiling.....it can be whatever you darned well please.....taking into consideration local code, federal code, the elements, etc etc.....which can all be looked up, hehehe