ORTHOGRAPHIC PROJECTION ...ppsx

Orthographic projection is a technique for technical drawing that uses parallel lines of sight perpendicular to reference planes to create 2D views of a 3D object. It can produce either multiview drawings with separate views showing front, top, and side views, or axonometric drawings showing all three dimensions in a single view. Multiview drawings accurately depict shape and size but require practice to read, while axonometric drawings are easier to understand but introduce distortions. The document provides examples and definitions of orthographic projections, principal views, reference planes, and the glass box approach for visualizing 3D to 2D projections.