Respuesta :

devishri1977

Answer:

D

Step-by-step explanation:

In parallelogram, opposite angles are congruent.

m∠B = m∠D

3x = x + 52            {Subtract x from both sides}

3x - x = 52                {Combine like terms}

     2x = 52           {Divide both sides by 2}

       x = 52/2

      x = 26

m∠B = 3x = 3*26 = 78

I think the answer should be D)

because both sides should be equal to each other, and if you take 78/3, it equals 28, and 28+52=78, so both sides equal 78, which makes it D

Otras preguntas