Perimètre de CDI
Author: François Boerkmann

La figure modifiable.

O = (0.4, 0.44)
A = (0.66, 2.88)
c = Circle(O, A)
B = Point(c)
a, b = Tangent(A, c)
b, d = Tangent(B, c)
M = Point(c)
d, e = Tangent(M, c)
e = Segment(O, A)
f = Segment(O, M)
g = Segment(O, B)
I = Intersect(b, a)
α = Angle(I, B, O)
β = Angle(O, A, I)
C = Intersect(d, a)
D = Intersect(d, b)
h = Segment(O, I)
γ = Angle(O, M, D)
i = Segment(I, C)
j = Segment(I, D)
k = Segment(D, C)
p = CircleArc(O, B, A)
l = Segment(O, C)
m = Segment(O, D)