5

r

r

A = Point(xAxis)
B = Point(xAxis)
kuvio1, f, g, h, i, C, D = Polygon(A, B, 4)
c = Circle(D, C, B)
E = Midpoint(A, C)
j = Segment(C, E)
k = Segment(E, B)
α = Angle(B, E, C)
β = Angle(E, C, B)