xcenter=None, ycenter=None, nvertices=5):

from math import pi

from reportlab.lib.units import inch

radius=inch/3.0

if xcenter is None: xcenter=2.75*inch

if ycenter is None: ycenter=1.5*inch

canvas.drawCentredString(xcenter, ycenter+1.3*radius, title)

canvas.drawCentredString(xcenter, ycenter-1.4*radius, aka)

p = canvas.beginPath()

p.moveTo(xcenter,ycenter+radius)

from math import pi, cos, sin

angle = (2*pi)*2/5.0

startangle = pi/2.0

for vertex in range(nvertices-1):

nextangle = angle*(vertex+1)+startangle

x = xcenter + radius*cos(nextangle)

y = ycenter + radius*sin(nextangle)

p.lineTo(x,y)

if nvertices==5:

p.close()