20. Edge Line
An edge line is a type of intersection line showing the
edge of a receding surface that is perpendicular to
the plane of projection.
21. Types of Three Orthographic Views
Front View
The orthographic view from the front side of the object
obtained on any frontal picture plane is called a front
view.
Front view may also be defined as the graphical plotting
of height against length of the object for all the
intersections and surface limits whether visible or
hidden, from the front.
Width of any part can never be indicated on this view.
31. Arrangement of Views
For that the profile plane is rotated through 90° ,
considering the intersection of the profile and the
frontal planes such that, the end view comes in the
frontal.
Also horizontal plane is rotated about its
intersection with the frontal plane, such that, the
top view also comes into the frontal plane.