Visiting Scout Connor Pugh, 11, from Troop 21 in Fredericksburg, Va., concentrates on the confidence course in the Armed Forces Adventure Area Thursday. (Photo by Mark Duncan)

This section explores Lines as design elements in photographs. Lines are usually repeating in either horizontal, vertical or diagonal arrangements. Horizontal lines are thought to be restful and are often seen in scenic pictures. However, this picture of a Scout hauling himself along a line is anything but restful. Notice the Scout’s body is a horizontal line too.

Explore the example to see how photographers use horizontal, vertical and diagonal lines as design elements.