[table][tr id=selectTool][td]1.[/td][td][icon]/images/ggb/toolbar/mode_polygon.png[/icon][/td][td]Activate the [i]Polygon tool[/i].[/td][/tr][tr id=geo221][td]2.[/td][td][icon]/images/ggb/toolbar/mode_polygon.png[/icon][/td][td]Successively select the existing points [i]A[/i], [i]B[/i], and [i]C[/i], in order to create a triangle [i]ABC[/i]. [br][u]Note[/u]: Start with point [i]A[/i] and click on point [i]A[/i] again in order to close the triangle.[/td][/tr][tr id=geo222][td]3.[/td][td][icon]/images/ggb/toolbar/mode_polygon.png[/icon][/td][td]Use the [i]Polygon tool[/i] in order to create a quadrilateral.[br][u]Note[/u]: You may click on the white background of the [img]https://wiki.geogebra.org/uploads/thumb/a/af/Perspectives_geometry.svg/16px-Perspectives_geometry.svg.png[/img] [i]Graphics View[/i] in order to create new points.[/td][/tr][/table]