Answer:
Explanation:
1) with the angle 120degrees, we know that external angles on a pair of parallel lines are the same. we can give this as an equation
120 = x + 130
re arrange to make x the subject
so subtract 130 on both sides
120-130=x
-10=x
x=-10
2) Corresponding angles in between parallel lines are the same. we can write this as
15x = 75
rearrange to make x the subject
x = 75 ÷ 15
x = 5
3)Internal angles inbetween parallel lines add to 180, so we can turn this into an equation
14x - 3 = 85
14x = 88
x = 88 ÷ 14
x = 6.285714 or just 6.29