A = (-20.72444866989653, -5.018038170134907)
B = (10, -5)
C = (-10, 10)
c = Segment(A, B)
a = Segment(B, C)
b = Segment(C, A)
M_b = Midpoint(A, C)
M_a = Midpoint(C, B)
M_c = Midpoint(B, A)
i = Segment(M_b, M_c)
j = Segment(M_c, M_a)
k = Segment(M_a, M_b)
g = Line(C, k)
α = Angle(M_c, M_b, M_a)
β = Angle(M_b, M_c, A)
γ = Angle(A, M_b, M_c)
δ = Angle(M_a, M_c, M_b)
d1, m_b, a_1, m_c = Polygon(A, M_c, M_b)
d2, m_a, f, h = Polygon(M_b, M_c, M_a)