A 3-D figure is a three-dimensional representation of an object or shape. It is also known as a SOLID, which is the five-letter solution to this crossword puzzle. 3-D figures are created using computer-aided design (CAD) software and can be used for a variety of purposes, such as in engineering, architecture, and animation. 3-D figures are often used to create physical models of objects, such as prototypes for products or buildings.