1. Orthographic and Isometric Lesson

2. Curriculum Plot Frame Criteria and Purpose
Orthographic view creation and methods
Isometric view creation and methods
Hidden lines and how they are used
Practice exercises for both views

3. Plot Frame Criteria

4. Orthographic Projection
Orthographic means a single view. Each of the 6 images below is an orthographic projection of a different side.
Most common drawings will only show the necessary amount of sides with the minimum being 3.

5. Orthographic View
Orthographic Projection
Isometric View

6. Orthographic Drawing

7. Isometric View
USE PENCIL, very important as you will make mistakes. Drawing this one in pen took me 3 tries to make sure it would fit on the page, and all the lines were the right length. This is a very simple drawing too.
Draw the Front using the appropriate 30 degree direction on your paper.
Draw either the side or top depth going 90 degrees from your front drawing.
Finish your drawing by closing all the sections.

8. Hidden Lines
Explain how dashed lines are used to define something that is underneath a solid object.

9. Recap Drawings should have enough defining information listed
Orthographic projections shows 2D view of a specific side and should line up as if the item was being unfolded
Isometric shows a 30 degree offset view
Hidden lines are dashed lines in orthographic projections
Teachers will have some additional opportunities to work on these items.

10. Ending Notes Additional Problems: