When walls collide with geometric shapes, an uninspired space can suddenly have a strong point of view. Whether iterated as patterned wallpaper, mirrors, or artwork in shapely frames, the effect can be subtle or statement making.

“Geometric shapes are very dynamic and carry a lot of visual weight,” says New Jersey-based Jennifer Matthews, co-founder and creative director at Tempaper, a line of removable wallpaper. “If they are small, they can add textural interest, whereas larger shapes create bold movement in a room