This 92.5 degree bend is used to change the direction of a PVC soil pipe. Most commonly used in a horizontal plane, the 92.5 angle gives a slight fall which creates a self-cleansing flow within the soil pipe.
This 135 degree bend is used to change the direction of a PVC soil pipe. This fitting can be used in either a horizontal or vertical plane, and two bends together are sometimes used as a pair to create an offset within a pipe run.