Which term describes a three-dimensional form?

• A. Line
• B. Shape
• C. Form
• D. Tone

Answer: (C)

Three-dimensional form means something that has height, width, and depth and actually occupies space. That’s what the term form in art refers to. A line is just a mark with length and direction and doesn’t convey volume. A shape is a flat, two-dimensional boundary that encloses an area. Tone describes lightness and darkness values, which can help us read volume, but it isn’t the thing itself. When you see a three-dimensional object or a drawing that models volume with shading, you’re looking at a form. So the best term for a three-dimensional form is form.