E_1 = (-6.057978163022511, -11.480476279221453)
B = (2.3344760278571366, -6.736915214811218)
C = (15.105601970500082, -6.809893077340607)
a = Segment(B, C)
b = LineBisector(a)
A = Point(b)
c = Segment(A, B)
d = Segment(A, C)
M = Intersect(b, a)
e = Segment(A, M)
f = Segment(B, M)
g = Segment(M, C)
α = Angle(C, M, A)
h = OrthogonalLine(M, d)
i = OrthogonalLine(M, c)
E = Intersect(h, d)
D = Intersect(i, c)
j = Segment(M, E)
k = Segment(M, D)
β = Angle(B, A, M)
γ = Angle(M, A, C)
δ = Angle(A, E, M)
ε = Angle(M, D, A)