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Identifying polygons that share a common boundary

Question asked by jbuckland-esriuk-esridist on May 23, 2012
Latest reply on Sep 17, 2012 by nahmed-esristaff
Does anyone know if there is a way to identify or select polygons that touch one another? I have looked at the topolgy rules, and the rule for overlapping polygons doesn't work, the polygons just share a boundary rather than overlapping. Ideally I would like to be able to do this without having to convert to polygons to lines, so if there is a clever way this can be done, please let me know!

In the attached jpg you can see the two polygons that touch are selected, but this was done manually. Is there an automated method of doing this?