Final answer:
Spatial aptitude refers to the ability to perceive fixed geometric figures and their relations with other geometric figures. It is an important skill in mathematics, architecture, engineering, and design.
Step-by-step explanation:
The ability to perceive fixed geometric figures and their relations with other geometric figures is referred to as spatial aptitude. Spatial aptitude is a component of intelligence that involves the understanding and manipulation of objects in space and the ability to mentally visualize and rotate objects. It is an important skill in fields such as mathematics, architecture, engineering, and design.