Top left: numbers of RLAGNs (top numbers) and galaxies (bottom numbers) in different groups of projected axis ratio in r band and M_*. Top right: fraction of RLAGNs as a function of host galaxy projected axis ratio in different M_* ranges. Results for different M_* groups are colour coded. The ranges of M_* are shown in the legend. The KDE-based (see text) results are displayed in dashed lines. The shaded areas represent the 1-σ errors of the KDE results derived from 500 bootstraps. Middle: similar to the top two panels but grouped based on the stellar velocity dispersion σ_* provided in the MPA-JHU catalogue (Brinchmann et al. 2004). The results for the two largest σ_* groups are not shown in the right panel because the results are affected by the noticeable larger M_* at larger q in these groups. Bottom: similar to the top two panels but grouped based on M_*/R₉₀. The results for the largest and smallest M_*/R₉₀ groups are not shown because of the possible bias and the small number of RLAGNs.