Answer:
see explanation
Step-by-step explanation:
b = 79° ← corresponding angles are congruent
c = 83° ← vertical angles are congruent
a and b and c and d are same side interior angles and are supplementary, thus
a = 180° - b = 180° - 79° = 101°
d = 180° - c = 180° - 83° = 97°
Thus
a = 101°, b = 79°, c = 83°, d = 97°
