5 Geometry for Drafting Chapter Objectives Identify geometric shapes and constructions used by drafters. Construct various geometric shapes. Solve technical and mathematical problems through geometric constructions using drafting instruments. Solve technical and mathematical problems through geometric constructions using a CAD system. Use geometry to reduce or enlarge a drawing or to change its proportions.
Multiview Drawing Chapter Objectives Explain orthographic projection. Describe first- and third-angle projection. Determine the number of views needed to describe fully the shape and size of an object. Locate multiple views on a drawing. Create the various views of an object. Develop a multiview drawing using board drafting. Develop a multiview drawing using CAD. Explain the advantages of using solid models in CAD.