Rectangular mirrors draw the eye along a plane, so they can highlight the width or height of a room. They're ideal complements to traditional, contemporary, and elegant design, and they're most common in bathrooms, living rooms, bedrooms, and hallways. When it comes to decorating any room, it all gets down to the proportions of the space and the items that decorate it, and mirrors are no exception to the rule. Mirrors can either be a focal point to a room’s wall decor scheme, or they can be a helpful accent.