How to Display the Trace of an Object

How to turn on the trace of an object

Objects can leave a trace in the

Graphics View when they are moved. There are two ways of turning on the trace of an object:

Select the object whose trace you would like to create. Use the Style Bar button in order to open the Properties Dialog. Check Show Trace on tab Basic. OR
Right-click (MacOS: Ctrl-click, tablet: long tap) on an object and check Trace On in the appearing Context Menu.

Then, modify the construction so that the object, whose trace you turned on, changes its position and leaves a trace in the

Graphics View.

1.		Select the Move tool and then click on point A.
2.		Open the Style Bar by clicking on the Style Bar button. Select the Object Properties and check Show Trace on tab Basic.
3.		Select the Move tool and drag point A to show its trace.
4.		Also activate the trace feature for point A'.
5.		To clear the trace, click on the Menu button in the upper right corner of the GeoGebra window. Then select Refresh Views from the View menu.

The

Trace On feature has some special characteristics:

A trace is a temporary phenomenon. Whenever the graphics are refreshed, the trace disappears (e.g. on zoom). If you want to display a permanent trace of a point you can use the Locus tool or command.
The trace cannot be saved and is not shown in the Algebra View.
You can turn off the trace of an object by un-checking Trace On either in the Object Properties Dialog or the Context Menu.
The menu item Refresh Views in the View menu clears all trace. Hint: If you are using GeoGebra Desktop or the Web or Tablet App, you can also use the key combination Ctrl – F in order to refresh the Views.