Preparation should include

• choosing the primary (i.e., orthographic) view from which the auxiliary view is projected
• demonstrating that the edge view of the inclined surface is perpendicular to one of the three principal planes
• creating a projection plane parallel to the inclined surface
• defining the true length, depth, or height in the orthographic view
• defining the true shape of the auxiliary view
• annotating all views. 

Process/Skill Questions:

• What is the purpose of creating auxiliary views of inclined surfaces?
• How is the true length, depth, or height in the primary orthographic view defined?
• How is the true shape of the auxiliary view defined?