Final answer:
Abstract forms and shapes on a bare stage are examples of abstract art that uses geometric shapes to create unique compositions.
Step-by-step explanation:
Abstract forms and shapes on a bare stage are examples of abstract art. Abstract art uses a visual language of form, color, and line to create a composition that exists with a degree of independence from visual references in the world.
Geometric shapes, such as those used by artist Piet Mondrian, can be seen in abstract art. For example, Mondrian used straight vertical and horizontal black lines to divide his canvas into rectangles of primary colors.
Form gives shape to a piece of art and can be two-dimensional or three-dimensional. Abstract art often explores different forms, including geometric shapes, to create unique and visually interesting compositions.