3 years ago

I can't figure out this answer, can someone help?

1 answer:

8 0

To solve this problem, we need to know that the adjacent interior angles (2 and 5, or 3 and 4) between two parallel lines are supplementary.
This means that &ang;2+&ang;5 = 180 °

which means
x+50 + 4x+30 = 180
collect similar terms and solve
5x + 80 = 180
5x = 180-80 = 100
x=20 °

&ang;2 = x+50 = 20+50 = 70 °

But &ang; 1 = &ang; 2 (vertical angles)
therefore
&ang; 1 = 70 °

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Step-by-step explanation:

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Hope this helps! (tried to do an explanation and my browser crashed...) </span>

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