1. Orthographic Projection
Objectives:
A. Define Orthographic Projection
B. Breakdown the six views of an orthographic
C. Create an orthographic drawing

2. Definition 1. Ortho = Straight or at right angles
2. Graphic = Written or drawn
3. Pro = Forward
4. Jacere = To throw
Literally =
“To throw forward at right angles”

3. Definition (cont.)
The method of representing the exact form of an object in two or more views on planes, usually at right angles to each other with lines drawn perpendicular from the object.

4. 6 Views of an Orthographic
Front
Top
Right Side
Left Side
Bottom
Rear

5. 6 Views of an Orthographic (cont.)
Three Planes
1. Vertical = Front
2. Horizontal = Top
3. Profile = Right Side
Third Angle Projection

6. Assignment
Do Sheet 23