Projected bar axis ratio, (b/a)_Bar, as a function of the physical size of bars, L_Bar, for barred AGN galaxies in pair systems (represented by green contours) and barred AGNs in the control sample (represented by gray contours). The upper and right panels illustrate the normalized distributions of L_Bar and (b/a)_Bar, respectively, for each sample. The dotted vertical black line marks the mean value of L_Bar, used to divide the sample into two categories, galaxies with short and long bars.