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Mathematics, 11.07.2019 07:30 gagem1278

∠c and ∠d are vertical angles with  m∠c=−2x+90 and  m∠d=x−30 .   what is m∠d ?

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∠c and ∠d are vertical angles with  m∠c=−2x+90 and  m∠d=x−30 .   what is m∠d...
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