Create your own!
[list] [*]Create your slider, minimum value n=12 and maximum value n=18; remember to set the increment to 1. Use the regular polygon tool and set the number of vertices to n. Use the angle tool and click in the center of the polygon. This will give you the interior angles for each polygon. [/list] [i][b]Can you find the exterior and central angles by deduction?[/b][/i]