1. Top view is directly over the front view.
2. Side view is inline horizontally with either top view or front view.
3. A line parallel to a plane of projection will be projected on that plane as a line.
4. A surface parallel to a plane of projection will be projected on that plane
5. A line perpendicular to a plane of projection will be projected on that plane as a point.
6. A surface perpendicular to a plane of projection will be projected on that plane as line.
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Orthographic projection is 3-D objects portrayed on a 2-D plane. The principles include; 1. top view is directly over the front view, 2. side view is either inline with top or side view, 3. lines parallel to a plane will be shown as a line, 4. A surface parallel to a plane is shown on that plane, 5. a line perpendicular to a plane shows as a point, and 6. A surface perpendicular to a plane shows as a line.
1. Top view is directly over the front view.
2. Side view is inline horizontally with either top view or front view.
3. A line parallel to a plane of projection will be projected on that plane as a line.
4. A surface parallel to a plane of projection will be projected on that plane
5. A line perpendicular to a plane of projection will be projected on that plane as a point.
6. A surface perpendicular to a plane of projection will be projected on that plane as line.
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frontal profile horizontal
Orthographic Projection/Drawing is nothing but representing a 3-Dimensional Object into 2-Dimensional drawing. it is a form of parallel projection where all the projections are orthogonal to the projection plane resulting in every plane of the scene appearing in viewing plane so, Another name for Orthographic Drawing is "Multview Drawing"
All drawing is a form of projection in itself. If you mean how do you project orthographic shapes to trace then the best way would be to place a light 180 degrees behind the object you wanted to draw. This would cast a silhouette (which is essentially what an orthographic drawing is) that you can trace.
the importance of Orthographic drawing is a basic understanding of presentation drawing, wherin 3 main views of an object are presented in correct dimension of the height, width and depth.