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A)
α = 180 - 65 = 115
β = 180 - 80 = 100
B)
α = 180 - 130 = 50
β = 180 - 130 = 50
C)
α = 180 - 130 = 50
β = 180 - 50 = 130
2.
A)
A = 70
B = 110
C = 70
D = 110
B)
E = 66
F = 114
G = 66
H= 114
C)
I = 50
J = 50
K = 130
L = 130