# Here we consider the average "roundness" of faces with n edges. 
# Roundness is computed as 4*pi*A/P^2, where A is area and P is
# perimeter.  The roundness of a circle is 1.

# Columns: n, average roundness, standard deviation, standard 
# error from the mean

3	0.434535299	0.129631929	8.01387E-06
4	0.549838592	0.140983886	6.67371E-06
5	0.645531717	0.122515252	5.65634E-06
6	0.713788154	0.102511747	5.33198E-06
7	0.761805814	0.085912407	5.71091E-06
8	0.796324498	0.073198726	7.00404E-06
9	0.822016457	0.06357242	9.79325E-06
10	0.84181654	0.056194388	1.5463E-05
11	0.857554259	0.050420048	2.72672E-05
12	0.870392219	0.045754126	5.32244E-05
13	0.880892054	0.041889117	0.000113524
14	0.889886225	0.039031183	0.000266383
15	0.897628415	0.035786302	0.000657654
16	0.904132305	0.033502636	0.00173238
17	0.907466815	0.033345093	0.004669247
18	0.938723892	0.014762592	0.007381296