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const2013 [10]
4 years ago
7

∠A and ​ ∠B ​ are vertical angles with m∠A=x and m∠B=5x−80 . What is m∠A ?

Mathematics
1 answer:
nirvana33 [79]4 years ago
4 0
20 degrees
vertical angles are equal, so 5x-80=x
solve for x and you get 20

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