The document defines orthographic projection as a method of projecting 3D objects into 2D views, typically including top, front, and right-side perspectives. It emphasizes the importance of aligning these views to scale on a single sheet for clarity. Additionally, it suggests visualizing the object as an unfolded cube to better understand the relationships between the views.

1. ORTHOGRAPHIC
PROJECTION

2. OBJECTIVES:
• Define orthographic projection
• Draw Orthographic projection

3. ORTHOGRAPHIC PROJECTION
Ortho-Greek word meaning perpendicular
Shows the views of an object projected in 2D
Usually views are the top, front and right side of the object

4. ORTHOGRAPHIC PROJECTION
• Unfold the cube so all the view lye in one plane
• The three views are now on a single sheet

5. Imagine the following

6. THE THREEVIEWS
Front view
Height andWidth
Top view
Width and depth
Right view
Depth and height

7. Make sure your view are aligned (and to scale)