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Orthographic and Auxiliary Projections
Design and Communication Graphics · 5th Year · Descriptive Geometry and Projection Systems · 2.º Período

Orthographic and Auxiliary Projections

Mastery of first and third angle orthographic projection to represent 3D objects in 2D. Students use auxiliary views to find true lengths and true shapes.

NCCA Curriculum SpecificationsNCCA Leaving Certificate DCG Syllabus Core Area 1: Descriptive Geometry - Orthographic ProjectionNCCA Leaving Certificate DCG Syllabus Core Area 1: Descriptive Geometry - Auxiliary Views

About This Topic

Mastery of first and third angle orthographic projection to represent 3D objects in 2D. Students use auxiliary views to find true lengths and true shapes.

Key Questions

  1. Why are auxiliary views necessary in descriptive geometry?
  2. How do we determine the true length of a line in space?
  3. What is the difference between first and third angle projection?