For part, sheet metal, and assembly documents, change the model display for a part, sheet metal, or assembly model.
On View tab→Style group→View Styles palette, click a model display style button:
Wireframe
Visible Edges (available in model documents)
Visible and Hidden Edges
Shaded
Shaded with Visible Edges
To add a shadow beneath a part or assembly in a shaded view, click the Drop Shadow button in the View tab→Style group 
.
To add a floor reflection or mirror reflection beneath a part or assembly in a shaded view, click the Floor Reflection button in the View tab→Style group
.
The display updates automatically using the style you selected.
Tip:
To learn how to change model display style for draft documents, see Apply a model display style to a PMI drawing view.