Each GeoGebra [i]View [/i]provides a [i]Toolbar [/i]with a selection of [i]Tools [/i]specific for the [i]View [/i]you are working with. You may activate a [i]Tool [/i]by clicking on the button showing the corresponding icon.[br][br][b]Task[/b]: Explore the [icon]/images/ggb/toolbar/mode_circle2.png[/icon] [i]Circle with Center through Point[/i] tool[br][list=1][*]Select the tool [img]https://wiki.geogebra.org/uploads/thumb/f/fb/Mode_circle2.svg/16px-Mode_circle2.svg.png[/img] [i]Circle with Center through Point[/i] from the [i]Graphics View Toolbar[/i].[/*][*]Click in the [i]Graphics View[/i] twice in order to create a circle.[br][u]Note[/u]: The first click defines the center of the circle, while the second click determines its size.[/*][*]Select the [img]https://wiki.geogebra.org/uploads/thumb/8/83/Mode_move.svg/16px-Mode_move.svg.png[/img] [i]Move [/i]tool and drag the points in order to change the circle's size and / or position.[/*][/list]

GeoGebra's [i]Tools[/i] are organized in [i]Toolboxes[/i], containing similar [i]Tools [/i]or [i]Tools [/i]that generate the same type of new object. You can open a [i]Toolbox [/i]by clicking on the lower part of a [i]Tool [/i]button and selecting a [i]Tool [/i]from the appearing list.[br][br][b]Task[/b]: Find the [icon]/images/ggb/toolbar/mode_segment.png[/icon] [i]Segment[/i] tool within the [i]Toolboxes[/i][br][list=1][*]Search the [i]Toolboxes [/i]for the [img]https://wiki.geogebra.org/uploads/thumb/0/0c/Mode_segment.svg/16px-Mode_segment.svg.png[/img] [i]Segment [/i]tool[br][/*][*]Click in the [img]https://wiki.geogebra.org/uploads/thumb/c/c8/Menu_view_graphics.svg/16px-Menu_view_graphics.svg.png[/img]  [i]Graphics View[/i] twice in order to create two points and a segment between them.[/*][*]Select the [img]https://wiki.geogebra.org/uploads/thumb/8/83/Mode_move.svg/16px-Mode_move.svg.png[/img] [i]Move [/i]tool and drag the points in order to change size and / or position of the segment.[br][/*][/list]

If you select a [i]Tool[/i], a [i]Tooltip [/i]appears explaining how to use this [i]Tool[/i].[br][u]Hint[/u]: Select the [i]Tooltip[/i] in order to open a web page providing help for the selected [i]Tool[/i].[br][br][b]Task[/b]: Find out how the [icon]/images/ggb/toolbar/mode_polygon.png[/icon] [i]Polygon [/i]tool works[br][list=1][*]Select the [img]https://wiki.geogebra.org/uploads/thumb/8/8a/Mode_polygon.svg/16px-Mode_polygon.svg.png[/img] [i]Polygon [/i]tool.[/*][*]Read the [i]Tooltip.[/i][/*][*]Figure out how to use this tool in order to create a triangle.[/*][/list]