Respuesta :

Answer:

49

Step-by-step explanation:

d+82+d=180 (angles on a straight line)

2d+82=180

2d=180-82

2d=98

Dividing both sides by 2

d=98/2

d=49

Answer:

d = 49

Step-by-step explanation:

2d + 82 = 180 ( AB is a straight line )

2d = 180 - 82

2d = 98

d = 98/2

d = 49

49 + 82 + 49 = 180

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