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Thanks for le helpfulness

qwertyzz Jul 28, 2020

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Inside the triangle angle D and C are equal 28 + 2x = 180 x = 76^o

The two angle at D sum to a straight line 76 + x = 180 x = 104^o

angle D = angle A = 104^o

ElectricPavlov Jul 28, 2020

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