Radio–optical misalignment angle distributions of radio-AGN with different projected linear size in samples with similar L_150 MHz distribution or similar L_150 MHz–b/a distribution. Left: dPA distributions of radio-AGNs with different projected linear size and similar L_150 MHz distribution. Right: dPA distributions of radio-AGNs with different projected linear size and similar L_150 MHz–b/a distribution. In both panels, the blue histograms denote radio-AGNs with large projected linear size (> 250 kpc) and the red histograms denote radio-AGNs with small size (≤250 kpc). The errorbars are slightly offset for clarity.