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15 votes
15 votes
Parallel lines cut by a transversal

Parallel lines cut by a transversal-example-1
User Nisitha Jayatilleka
by
2.8k points

2 Answers

19 votes
19 votes
8 (hope this helps you)
User John Manak
by
3.6k points
19 votes
19 votes

Answer:

x=5

Explanation:

Hello There!

The angle labeled 20x and the angle that has a measure of 80 degrees are supplementary angles meaning the sum of the two is 180

so we can create an equation to solve for x

180=80+20x

step 1 subtract 80 from each side

80 - 80 cancels out

180-80=100

100=20x

step 2 divide each side by 20

100/20=5

20x/20=x

we´re left with x=5

User Runtime Terror
by
3.0k points
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