Odpowiedź:
a)
360 - (2*120) = 360 - 240 = 120
120 : 2 = 60
α = 60°
β = 120°
b) 180 - 50 = 130°
360 - (2*130) = 360 - 260 = 100°
100 : 2 = 50
α = 130°
β = 50°
c) 180 - 100 = 80°
360 - (2*80) = 360 - 160 = 200
200 : 2 = 100°
α = 100°
β = 80°
