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What is x for unknown angle problems algebra?

What is x for unknown angle problems algebra?-example-1
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User Nance
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1 Answer

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Explanation:

If two lines cross each other the angles opposite of each other are the same. So left=right and top=bottom. Knowing this the bottom angle must be 120°. if 3x=120° then x=40°

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User JD Solanki
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