Polarization fraction (Π), summed between 2 and 8 keV, as a function of the inclination of the source, assuming different wedge opening angles. In both panels, the coronal temperature is set to kT_e = 60 keV and R_disk = 25R_G. The left panel corresponds to the a = 0 and R_corona = 6R_G scenario, while the right panel corresponds to a = 0.998 and R_corona = 1.24R_G scenario. As the opening angle increases, Π decreases due to the increasing degree of symmetry of the system.