Use the View tab > Navigate panel to interact with the view of the part.
Use the options in the Resize to Fit menu to center items in the graphics window:
Resize to Fit — Use this menu option to change to a complete view of the part, centering it in the graphics window. The view of the part automatically scales to fit in the window.
Resize to Fit Selected — Use this menu option to center the entities you have selected in the graphics window. The view of the part is automatically scaled to fill the window with the selected items. The angle of view is not changed.
Resize to Fit Selected Point — Use this menu option to center the view about the last location you selected in the graphics window.
To use a view mode:
The cursor shows the icon of the selected view mode.
The view mode is canceled.