Microsoft Word - lecnote_fm_engineering drawing

B. Inclined Surfaces
An edge appears in true length when it is parallel to the plane
of projection, as a point when it is perpendicular to the plane
and shorter than true length when it is inclined to the plane.
Similarly, a surface appears in trey shape when it is parallel to
the planes of projection, as alien when it is perpendicular to
the plane, and fore shortened when it inclined to the plane. An
object with its face parallel to the plans of projection as figure
5.12; a top, front, and right side surfaces are shown in true
shape and the object edges appear either in true length or as
points. The inclined surface of the object as figure 5.13 does
not show true shape in any of the views but appears as an
edge in front view. The front and rear edges of the inclined
surface are in true length in the front view and fore shortened
in the top and side views. The top and bottom edges of the
inclined surface appear in true length in top and side views
and as points in the front view.