Refers to the arranging of the elements in a piece so that there is an equality from one side to the other.

It is a principle of art in which part of the work stands out, in order to draw the viewer’s eye there first.

a principle of art may be shown using complementary colors or emphasizing differences using light and dark colors.

It is a consistent, orderly or pleasing arrangement of parts.

It is simply repeating an element that will cause the viewer’s eye to move around to each element.