A (positive) shape in <u>negative plane</u> is the same as a figure/ground relationship.
Explanation:
In design, everything can be classified as either figure and background. Their relationship is complimentary. So it is the same as a positive shape in negative plane.
The relationship between positive shape and negative space sometimes called figure/field, figure/ground, foreground/background, or solid/void relationship.
Fauvist artists extended the visual vocabulary of post-impressionism by making their primary subject matter: Color. Fauvism
is a style of painting characterized by areas of bright, contrasting color and simplified shapes.