Line Defining Form And Motion

Lines can help move our eyes and define how we interpret form. Even invisible lines, such as lines of motion or perspective, are critical elements to almost every composition.

I feel this piece is a great example of how the use of line can create form and value. The limbs and features of the subjects are made with lines, but the variations in line create form.
Most of the form in this piece is made with tiny lines or "hatch marks". The spacing of these marks as well as the length gives the illusion of a 3D surface as well as light and dark.
While faint lines help create form here too. Lines done in color make up the hair and the contrast between the girl's face and the background creates an implied line.
Lines are used here as well to block out the shapes of the buildings. Invisible lines of perspective also help to organize the city and make it more lifelike.
Ancient art also makes use of line. Here lines are carved into the sculpture to create a relief that defines the shape of the artist's subject.
Here the artist makes use of white lines on a black surface to create the illusion of light and shadow. Lines are used exclusively here and convey form, value, movement, and shape all on their own.
While difficult to see lines define the shapes and motions of the characters within this piece. Not just visible lines, but implied lines, and lines of motion help bring together the composition.
Not only do the lines in the design painted on the pottery add to the piece, but the lines of gold used to assemble it also help the eye travel throughout it.
Here lines and hatching are almost exclusively used to define shape for these anatomy studies.
While line is not exclusively used here it plays a vital role in helping to "block out" the shapes of objects that are brightly lit. With very few elements the form of the scene is described.
Line and blocks of color are a style developed by the Japanese to define form as elegantly and efficiently as possible.
This piece is very line heavy. Almost all of the elements in the foreground are defined with line. The eye follows the lines that make up the wire of the fence and tangled around the tree.
This painting follows motion lines that are not actually drawn but help give the scene a sense of movement. The legs of the horse as well as the spines of both it and the rider have motion lines.
The lines made here are made of sand, both protruding out of the piece and carved into it. The varying height and depth of these lines creates a relief image.
Very few lines can still describe quite a bit. While the lines are fairly simple the placement of each of them lets the eye fill in the "gaps" and create a more detailed picture.