a)

b)

c)

A = (28.50590121465863, 22.31775912693202)
B = (19.223884854846894, 6.8477318605791355)
C = (49.39043802423503, 7.621233223896781)
đa giác1, c, a, b = Polygon(A, B, C)
d = Distance(b, a)
chuvidagiacđa giác1 = Perimeter(đa giác1)
α = Angle(C, B, A)
β = Angle(A, C, B)
I = (84.05736276201674, 4.597546076382353)
K = (95.2379733772445, 13.598289213169487)
H = (75.97075760005954, 20.13789164849139)
đa giác3, f_2, d_2, e_2 = Polygon(I, K, H)
E = (55.2971757077516, 7.129005083603735)
F = (70.13433822229912, 7.621233223896781)
e = Segment(E, F)
G' = Rotate(F, β, E)
γ = Angle(F, E, G')
D' = Rotate(E, -(α), F)
δ = Angle(D', F, E)
f = Ray(E, G')
g = Ray(F, D')
D = Intersect(f, g)
đa giác2, h, d_1, g_1 = Polygon(E, F, D)
i = Distance(b, a)
j = Distance(d_1, h)
k = Distance(f_2, g_1)
l = Distance(e_2, d_2)