Answer:
d = 37°
Step-by-step explanation:
d° and the unmarked angle and alternate angles
68° 75° and the unmarked angle form a triangle
The sum od the interior angles of a triangle add upto 180°
So, 180° = 75° + 68° + unmarked angle
Lets call the unmarked angle 'x'
180° = 75° +68° + x
x = 180° - 75° + 68°
x = 180° - 143°
x = 37°
The unmarked angle is 37°
Remember d° and the unmarked angle are alternate angles
So, d° = 37°
