Click
Graphics in the Style group on the Display tab.
Select a graphics option:
Shaded: Displays solids and surfaces as
three-dimensional, shaded objects.
Enhanced Shaded: Solids and surfaces are displayed as
three-dimensional, shaded objects (the default). The shading represents
the exposure of the scene to ambient lighting, with shadows and
highlights to improve rendering.
Wireframe: Only the edges of objects are displayed.
The wireframes are the same color as the edges.
Hidden Line: Objects are displayed as wireframes with
hidden lines displayed in a light gray.
Hidden Line Removed: Objects are displayed as
wireframes and hidden lines are not shown.
All objects in the Design window will be displayed in the style
you select.