These elements possess physical and psychological characteristics that are essential. Line is important as lines enclose space, give us the outline or contour of forms and also generate forms. There are two types of lines, straight and curved. The straight lines will general the psychological impression of steadiness and strength and also simplicity. Objects with straight line contours are simple.
Straight lines are characteristic of types or periods of furniture.
Straight lines will include form striped, checked, plaid and herringbone designs. The direction that straight lines take will vary the effects of lines. Horizontal lines will give the effect of relaxation as well as breadth. If you wish to achieve a restful room I would suggest you stress the use of horizontal lines in your wallpaper, drapes, lampshades, picture arrangement, upholstery and furniture. These horizontal lines would predominate in a room that is informal.