In engineering, various methods are used to represent objects. Among these, the engineering drawing or multiview drawing is a major means of communicating the design concept. In this method, orthogonal projection is used to draw and define an object.
Orthographic Projection
Later on this year, you will learn about other methods of representing objects pictorially. Pictorial drawings provide a three dimensional view of an object as it would appear to the observer. Generally, multiview and pictorial drawings are used together to provide a complete picture of the object being represented.
Pictorial Drawing