T108a

A = (2.807845509135461, -0.19641086738147026)
B = (5.260144696955682, 1.7266151144343889)
f = Line(A, B)
C = (8.506353693782449, -2.4899280934003847)
g = Line(A, C)
α = Angle(C, A, B)
D = Point(g)
β = Angle(B, A, D)
vieruskulmiensumma: α + β
teksti1 = LaTeX(vieruskulmiensumma, true, true)