The Shape tools create rectangles, circles, ovals, polygons, and custom shapes. These tools are often used to create Web buttons and other graphic objects.
Rectangle, Oval, and Polygon Shapes
The rectangle,
oval, and polygon shapes use both a Border color and a Fill
color. From the Tool Settings Panel,
select a Fill color for your shape, and a Color and Thickness for the
Border. If you want the interior of the shape to remain unfilled (transparent)
click the Don't Fill checkbox.