Author: IREM de Paris-Nord

A_0 = (3.061616997868383E-16, 5)
A_1 = (-3.5355339059327373, 3.5355339059327378)
A_2 = (-5, 6.123233995736766E-16)
A_3 = (-3.5355339059327386, -3.5355339059327373)
A_4 = (-9.184850993605148E-16, -5)
A_5 = (3.535533905932737, -3.5355339059327386)
A_6 = (5, -1.2246467991473533E-15)
A_7 = (3.5355339059327386, 3.535533905932737)
a = Segment(A_0, A_7)
b = Segment(A_7, A_6)
c = Segment(A_6, A_5)
d = Segment(A_5, A_4)
e = Segment(A_4, A_3)
f = Segment(A_3, A_2)
g = Segment(A_2, A_1)
h = Segment(A_1, A_0)