Figure 5.8 Orthographic projection of objects
B. Orthographic views
It is the picture or view or thought of as being found by
extending perpendiculars to the plane from all points of the
object. This picture, or projection on a frontal plane, shows the
shape of the object when viewed from the front but it does not
tell the shape or distance from front to real. Accordingly, more
than one protection is required to describe the object.