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Mathematics 18 Online
OpenStudy (anonymous):

In the diagram below, is parallel to . What is the value of x? (Picture below.)

OpenStudy (anonymous):

OpenStudy (anonymous):

x=160 because they are alternate interior angles and 160+30=180

OpenStudy (anonymous):

Alright, so in the future, I just have to find what number it takes to get to 180?

OpenStudy (anonymous):

Thank you by the way!

OpenStudy (anonymous):

in that case a the two angles are supplementary, meaning they add to 180, so for the future if there is a straight line, you can just subtract the angle you know from 180

OpenStudy (anonymous):

Yes! That's what I was thinking! Thank you so much.

OpenStudy (anonymous):

It was 150 btw haha.

OpenStudy (anonymous):

oh wow, my bad

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