1. α = 180-63 = 117
β = 180-49 = 131
γ = 180-68 = 112
α+β+γ = 360
2.
1) α = 180-126 = 54
β = 180-α-35 = 180-54-35 = 91
γ = 180-β = 180-91 = 89
δ = 180-35 = 145
2) α = 180-148 = 32
δ = 180-55 = 125
β = 180-α-δ = 180-32-125 = 23
γ = 180-β = 180-23 = 157