Angeln - geometrische Optik!

W = (15, 0)
V = (15, -10)
U = (-15, -10)
T = (-15, 0)
R = (20, 0)
Q = (-10, 0)
a = Segment(Q, R)
poly1, b, c, d, e = Polygon(T, W, V, U)
Fischer = (7.94, 1.62)
Fisch = (-4.2, -4.34)
P = Point(a)
A: P + (1, 0)
B: P + (0, 1)
C: P + (-1, 0)
D: P + (0, -1)
b = Ray(Fischer, P)
c = Segment(P, Fischer)
α = Angle(Fischer, P, B)
n = 1.3
D' = Rotate(D, -asin(n sin(α)), P)
D'_1 = Rotate(D, -asin(n sin(α)), P)
β: asin(sin(α) / n)
D'_2 = Rotate(D, -β, P)
γ = Angle(D'_2, P, D)
d = Ray(P, D'_2)
e = Ray(Fisch, P)