bppdcg.weebly.combppdcg.weebly.com/.../8/13685178/orthographic_projection.pdfThe plane must be...
23
bppdcg.weebly.combppdcg.weebly.com/.../8/13685178/orthographic_projection.pdfThe plane must be perpendicular to the line of sight (Fig. 2.5). When we consider all three views together