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166 + c = 180
c = 180 -- 166
= 14
b) 29 + 118 + g = 180
147 + g = 180
g = 180 - 147
= 33
c) 2h + h + 30 = 180
3h + 30 = 180
3h = 180 - 30
3h = 150
h = 50
d) 360 - 324 = 36
85 + 36 + x = 180
121 + x = 180
x = 180 - 121
= 59
e) 360 - 300 = 60
60 + 53 + x = 180
113 + x = 180
x = 180 - 113
= 67
sudut c
= 180 - (125 +41)
= 180 - 166
= 14 derajat
b.
sudut g
= 180 - (118 + 29)
= 180 - 147
= 33 derajat
c.
sudut h
h = 90 derajat
2h + h = 180 - 30
3h = 150
h = 150/3
h = 50
2h = 100
d. sudut y = 360 - 324 = 36
85 + 36 + x = 180
121 + x = 180
x = 180 - 121
= 59
e) sudut y = 360 - 300 = 60
60 + 53 + x = 180
113 + x = 180
x = 180 - 113
= 67