kulma α ∈ ]0, π /2[

T459

A = (2, 1)
B = (3, 1)
c = Circle(A, 2)
d = Circle(B, 2)
C = Point(c)
f = Segment(A, C)
g = Line(C, xAxis)
D, E = Intersect(d, g)
h = Segment(B, E)
vesikouru, a, b, e, c_1 = Polygon(A, B, E, C)
i = Line(A, xAxis)
F = Point(i)
α = Angle(C, A, F)
Pistevesikouru = PointIn(vesikouru)
teksti1 = LaTeX(vesikouru, true, true)