[list=1][*]Locate the Polygon button [icon]https://www.geogebra.org/images/ggb/toolbar/mode_polygon.png[/icon][/*][*]Select the Polygon button [/*][*]On graph select appropriate coordinates (You can do this by either inputting the coordinates on the left column or by simply clicking coordinates on the grid)[/*][*]Connect your coordinates[/*][*]You now have a polygon! [/*][/list]

[list=1][*]Create a triangle with coordinates A(0,0) B(4,5) and C(2, 4)[/*][*]Create a square with the coordinates A (2,0) B(5,0) C(5,3) and D(2,3)[/*][/list]