Dependence of image sizes on the inclination angle i for the five best-fit models listed in Table 2. For each inclination, we sample a range of values for the relative position angle between the major axis of the scattering kernel and the black-hole spin, ΔPA = 0°, 10°, 20°, …, 170°, in order to obtain upper and lower bounds on the predicted sizes and show their range as a gray band. The solid lines mark the image size (including interstellar scattering) obtained at 1.3 mm from EHT observations and the dotted lines mark uncertainties at the 3σ level. While the image sizes decrease for high inclination for most simulations, it increases for high inclination for the non-spinning MAD simulation a0MAD. The image sizes for a9MAD jump to large values for i = 10° because, at small inclinations, the observer looks down along the strong funnel.