What best defines a projection drawing?

A projection drawing is best defined as a precise visual representation in either isometric or orthographic format. This type of drawing is essential in design and engineering as it conveys necessary dimensions and spatial relationships accurately. Isometric projections provide a three-dimensional view of an object, allowing the viewer to understand the shape and layout from a specific angle, while orthographic projections display multiple views (typically top, front, and side) of an object in a two-dimensional format.

This precision and clarity make projection drawings vital tools for designers, architects, and engineers when communicating their ideas and specifications to others, ensuring that there is no ambiguity in the interpretation of the design. This contrasts with options like rough sketches or outlines, which may lack the detailed accuracy and clarity provided by projection drawings.