L' = L

A = (1.5751604120256673, 10.585689533710326)
B = (-0.3278688524590151, 4.688524590163935)
C = (7.731021876963499, 4.743150358904057)
t1, c, a, b = Polygon(A, B, C)
c1 = Incircle(A, B, C)
D, G = Intersect(c1, a)
I = Center(c1)
f = Ray(D, I)
E = Intersect(c1, f, 2)
g = Segment(D, I)
h = Segment(I, E)
L = Intersect(Line[A, E], a)
i = AngularBisector(B, A, C)
j = Ray(A, B)
F = Point(j)
k = AngularBisector(C, B, F)
H_1 = Intersect(i, k)
d = Circle(H_1, Distance[H_1, L])
l = Ray(A, C)
J = Intersect(d, j, 1)
m = Segment(A, J)
p = Segment(B, C)
K = Intersect(d, Line[A, C])
n = Segment(A, K)
q = Segment(A, L)
r = OrthogonalLine(A, a)
H = Intersect(r, Segment[B, C])
s = Segment(A, H)
α = Angle(A, H, B)