approximately as they appear to the observer. This type of
drawing is called pictorial drawing. Since pictorial drawing
shows only the appearances of objects, it is not satisfactory
for completely describing complex or detailed forms.
As we have seen in the previous chapters, the four principal
types of projection are:
♦ Multi view projection
♦ Axonometric projection
♦ Oblique projection
♦ Perspective projection
All except the regular multi view projection are pictorial types
since they show several sides of the object in a single view. In
all cases the view or projections are formed by the piercing
points in the plane of projection of an infinite number of visual
rays or projectors. In this chapter, we will focus on the
common types of pictorial projection i.e. isometric projection.