a)

B = (-3.2642038451353, 10.2251003178248)
A = (-8.390036962825487, 5.060138703053007)
đa giác1, a, b, c, d, D, C = Polygon(B, A, 4.0)
E_1 = Midpoint(A, C)
e = Segment(B, E_1)
f = Segment(E_1, A)
g = Segment(E_1, C)
h = Segment(E_1, D)