2nd QTR Exam Flashcards
(55 cards)
, is a drawing in which a three
dimensional object is represented in two dimensions.
This is done making multiple two dimensional
drawings of the object, viewed from different angles.
orthographic projection
Is a term which refers to the
different positions that the
object maybe projected and this
is done by extending
perpendicular lines to the plane
from all parts of the object.
view
shows the
object as it would appear
if you were looking down
at it from above, creating
a bird’s-eye view of its
plan.
The top view
shows a straight-
on view of the
object, as if
looking at it from
the front.
The front view
Why Orthographic Drawing is Significant?
Precision
Ease of Interpretation
Clarity of Communication
Time and Cost Saving
displays
the object as if you
were looking at it from
the side, showing its
dimensions along its
length, height, and
width.
The side view
❖ It is the common
intersection of three or
more surfaces or edges.
corner
It is the intersection of two plane
surfaces.
edge
– a line that is parallel
to a plane of projection but inclined to
adjacent planes.
Inclined edge
– a line that is
perpendicular to a plane of projection
Normal edge
a rounded interior corner
fillet
a 45 degree line which controls space between the top and front views and between the front and end view
Miter Line
- It is an imaginary plane into which a
view is conceived to be drawn.
Plane of projection
technical term for view
projection
– a plane of
projection upon which the front view
is projected.
Frontal Plane
– a plane of
projection upon which the top view is
projected.
Horizontal Plane
– a plane of
projection upon which the end or side
view is projected.
C. Profile Plane
– this is the measurement of an
object from side to side, typically
perpendicular to the length. It describes how
wide the object is.
width
– is the longest dimension and are
shown in the front view.
length
– this is the vertical dimension of
an object. It refers to how tall the object is,
measured from the base to the top.
height
is a 3D drawing
technique used in engineering and
architecture to represent objects in a
realistic and visually appealing way.
Isometric projection
Advantages of Isometric Projection
Accurate Measurements
Ease of Understanding
Visual Appeal
Isometric projection
❏ Is sometimes known as central projection.
This type of pictorial drawing is most preferred by industrial
designers because it represents the object closely like the pictures
taken by a camera.
❏ Geometrically, an ordinary photograph is considered as this
Perspective Drawing
- deals with the
organization of shapes in space; a
type of perspective used in which
the size, shape, and position of
objects are determined by drawn
or imagined lines converging at a
point on the horizon to give the
illusion of depth and distance.
LINEAR PERSPECTIVE (or geometric
perspective)