[table][tr id=booldelete1][td]1.[/td][td][icon]https://beta.geogebra.org/images/ggb/toolbar/mode_delete.png[/icon][/td][td]Find the [i]Delete [/i]Tool in the last Toolbox and activate it.[/td][/tr][tr id=booldelete2][td]2.[/td][td][icon]https://beta.geogebra.org/images/ggb/toolbar/mode_delete.png[/icon][/td][td]With the Delete tool activated, select circle [i]c[/i] in order to delete it.[/td][/tr][tr id=booldelete3][td]3.[/td][td][icon]https://beta.geogebra.org/images/ggb/toolbar/mode_delete.png[/icon][/td][td]Select point [i]C[/i] in order to delete it together with all objects that depend on it (i.e. pentagon and its angles).[/td][/tr][tr id=undo][td]4.[/td][td][img]https://wiki.geogebra.org/uploads/thumb/3/38/Menu-edit-undo.svg/32px-Menu-edit-undo.svg.png[/img][/td][td]Use the [i]Undo [/i]button in order to undo your changes.[/td][/tr][tr id=redo][td]5.[/td][td][img]https://wiki.geogebra.org/uploads/thumb/8/85/Menu-edit-redo.svg/32px-Menu-edit-redo.svg.png[/img][/td][td]Use the [i]Redo [/i]button in order to redo the last step.[/td][/tr][/table]