Draw a Polygon

What is a polygon?  Well, triangles, squares, octagons and hexagons are all polygons - shapes with some number of corners.  In a polygon, each corner or turn is called a vertex.  

You need to begin the shape, use vertexes each time you change direction and end shape.  The first vertex is also the last vertex which closes the shape.

Write a program to draw a beautiful polygon like one of the ones above. Below is a program I wrote to draw a diamond.  Be sure to fill your polygon with color.

Diamond

size(400,400);

background(255,255,255);

fill(100,255,0);

strokeWeight(4);

beginShape();

vertex(100,200);

vertex(200,100);

vertex(300,200);

vertex(200,300);

vertex(100,200);

endShape();

And here is the resulting image