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Creating a custom toolbar

Tools menu

You can open the Tools menu by clicking on the  Menu button in the upper right corner of GeoGebra Classic and selecting  Tools. After opening the Tools menu, you have access to the following items: Customize Toolbar The different toolbars can be customized by selecting Customize Toolbar.  Create New Tool Based on an existing construction you can create your own tools in GeoGebra. After preparing the construction of your tool, choose Create New Tool in the  Tools Menu. In the appearing dialog you can specify the output and input objects of your tool and choose names for the toolbar icon and corresponding command. Manage Tools You can delete a tool or modify its name and icon in the Manage Tools dialog. You can also save selected tools to a GeoGebra Tools File (GGT). This file can be used later on (File menu, Open) to open the tools in another construction.

Limit the number of available tools

1.Toolbar ImageOpen the Menu in the top right corner and select Tools.
2.Toolbar ImageSelect Customize Toolbar to open the dialog.
3.Toolbar ImageSelect the Graphics View Icon to customize the Graphics View Toolbar.
Hint: The window on the left side lists all GeoGebra tools that are part of the chosen Toolbar. If you click on one of the + buttons in front of the tool names the corresponding Toolbox is opened.
4.In the list on the left click on the + button in front of the Point tool to open the Toolbox.
5.Toolbar ImageSelect the Point tool and drag the tool to the list on the right. 
6. Then drag the  Attach / Detach Point tool, the Intersect tool, the  Midpoint or Center tool and the  Complex Number tool to the list on the right. The  Point on Object tool will now be the only tool left in this Toolbox.
7. Now open the next Toolboxes and remove all tools except those you need to construct an isosceles triangle ( Segment,  Perpendicular Bisector,  Polygon)
Hint: To remove an entire Toolbox from the custom Toolbar, select it in the list on the left side of the appearing dialog and drag it to the list on the right.
8. Click Apply once you are done. Hint: Your GeoGebra app should now show the customized Toolbar.
9. Construct an isosceles triangle using the tools from your customized Toolbar.
Note: You can restore the default Toolbar by clicking on the button Restore Default Toolbar in the left lower corner of the dialog.

Try it yourself...