Yes you got it right. Hanging a mount in a corner essentially means hanging the wall plate on one of the walls and with a full motion you'll be able to extend and swivel within the corner. For any more recommendations for full motion mounts, feel free to check out this mountfinder tool on the website: http://mf1.bestbuy.selectionassistant.com/. Or, just call us at 800-359-5520. We are here 7 days a week to make sure you get what you need.