Development should include
- radial patterns
- an understanding of the properties of cones and pyramids
- parallel line pattern development (often used to indicate fold or bend lines in flat drawings of sheet metal products [e.g., heating, ventilation, and air conditioning (HVAC) ducts, filing cabinets])
- an understanding of prisms and cylinders
- triangulation of irregular surfaces.
Process/Skill Questions:
- What industries might use pattern development drawings?
- How are parallel and radial developments different?
- How is a radial pattern developed from a cone?
- When might triangulation be required to develop a surface?