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Mathematics, 05.07.2019 22:00 paatnguyyen
∠a and ∠b are vertical angles with m∠a=x and m∠b=5x−80 . what is m∠a ?
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∠a and ∠b are vertical angles with m∠a=x and m∠b=5x−80 . what is m∠a ?...
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