1.If the 3D diagram is in a document or a worksheet, double-click on the diagram to open it.

2.Double-click on the surfaces for which you would like to turn the hidden lines on or off.

3.In the dialog box that appears, click on the Grid Lines tab.

4.Check the option Hidden lines.

Note:   If you have surface filling turned on, the Hidden lines option will have no effect.

See Also

Curve