Learning Objectives21.1 Axes, Planes, and Faces21.2 3D Workspaces, Ribbon, Toolbars, and 3D Options21.3 Entering and Exiting 3D21.4 Projecting Into 3D21.5 3D Dynamic Views21.6 Extrude21.7 Visual Styles: Hide and Shade21.8 View Cube and Navigation BarSummary