O = Intersect(yAxis, xAxis)
M = Intersect(d, Δ_1)
a = OrthogonalLine(M, xAxis)
b = OrthogonalLine(M, yAxis)
A = Intersect(b, yAxis)
B = Intersect(a, xAxis)
c = Segment(M, A)
e = Segment(M, B)