Respuesta :

Answer:

Angle A = 58

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the opposite interior angles

? + 80 = 138

Subtract 80 from each side

? + 80-80 =138 - 80

? = 58

Angle A = 58

Answer:

THE ANSWER IS 58

Step-by-step explanation:

HOPE IT HELPS:)