Final answer:
The illusion of form in art is most commonly created through the element of light and the manipulation of shadow to suggest volume and space. Geometric shapes, patterns, and colors are also instrumental, particularly in Op Art, where these features are precisely calculated to produce the impression of three-dimensionality on a flat surface.
Step-by-step explanation:
The element of art used to create the illusion of form can be several, but one of the most crucial is the use of light and shadow. This technique helps to create the illusion of three-dimensionality on a two-dimensional surface. Artists manipulate light and value to suggest that their forms have mass and occupy a three-dimensional space. Additionally, Op Art artists use geometric shapes, patterns, and color to create optical effects that also give the impression of form. The interplay between the background and foreground, as well as the use of perspective and positioning, contributes to the illusion of depth and form.
Form in art can be geometric or organic and is an expression of all the formal elements of art. The illusion of form in two-dimensional artwork is often accomplished through a careful arrangement of these formal elements to mimic how forms would appear in three-dimensional space. Through the application of elements like color, value, and line, and the principles of art like contrast and pattern, artists are able to create a compelling illusion of form that engages the viewer.