B = Point(xAxis)
C = Intersect(xAxis, yAxis)
D = (0, 8)
O = Midpoint(D, B)
A = Mirror(C, O)
a = Segment(D, A)
b = Segment(B, A)
c = Segment(D, C)
d = Segment(C, B)
e = Segment(D, B)
M = Point(b)
f = Line(M, O)
N = Intersect(f, c)
h = Line(N, e)
P = Intersect(h, d)
P1, m, n, m_1 = Polygon(N, M, P)
x_M = Distance(A, M)