For those unfamiliar with the term, a “mitered” border refers to corners that are cut at a 45-degree angle to form a diagonal “V” shape when sewn. When properly executed, mitered borders result in edges that flow smoothly around the quilt without bumps or gaps at the corners. They give a quilt a polished, tailored look. While not a difficult technique, achieving perfectly even miters does require some precise measuring and sewing.