A = (-2.76, -1.88)
B = (-1.26, 2.92)
a = Line(A, B)
C = (-0.84, -0.78)
b = Line(B, C)
c = Line(A, C)
Alt1 = OrthogonalLine(B, c)
Alt2 = OrthogonalLine(A, b)
Alt3 = OrthogonalLine(C, a)
Base1 = Intersect(c, Alt1)
Base2 = Intersect(a, Alt3)
Base3 = Intersect(b, Alt2)
d = Segment(A, B)
e = Segment(A, C)
f = Segment(B, C)
α = Angle(d, Alt3)
β = Angle(e, Alt1)
γ = Angle(f, Alt2)
g = Segment(C, Base1)
h = Segment(C, Base3)
i = Segment(B, Base2)