Answer:
d = 24 degrees
Explanation:
The angle below 98 and the 98 form a 180 degree angle ( straight line)
so THAT angle = 82 degrees
then 82 degrees + 2d + 2d +2 = 180
( the sum of the interior angles of a triangle add to 180)
82 + 4 d + 2 = 180
84 + 4d = 180
96 = 4d d = 24 degrees