Respuesta :

Answer:

  • D. 102°

Step-by-step explanation:

  • m∠ABC =
  • m∠ABD + m∠CBD =    Angle addition postulate
  • 1/2mCD + 1/2mAD =     Angle measure is the half the intercepted arc
  • 1/2(128) + 1/2(76°) =
  • 102°