kak jawab ya pertanyaan ku sama pake caranya

180 = 70 + 40 + x
x = 70

a = x - 20
a = 50°

a + b + 70° = 180
b + 120 = 180
b = 60°

40 + c +20 = 180
c + 60 = 180
c = 120°

c° = 180 - ( 20 + 40 )
= 180 - 60
= 120 °
b° = 180 - 120
= 60°
a° = 180 - ( 60+70 )
= 180 - 130
= 50°
jadikan jawaban ter Brainly yaa