Respuesta :

mhanifa

Answer:

  • 36°

Step-by-step explanation:

As per definition the vertical angles are equal

  • m∠A=(2x+26)° and m∠B=(3x+21)° are vertical angles

Finding the value of x

  • 2x + 26 = 3x + 21
  • 3x - 2x = 26 - 21
  • x = 5°

Finding the angle measure

  • m∠B = 3*5° + 21°= 36°

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