Answer:
c° + 148° = 180° (St. angle)
c° = 180° - 148°
c° = 32°
then,
c° = d° = 32° ( alternative angle)
then,
let's d (crosspounding angle)
d° + 62° = 180° (St. angle
d° = 180° - 62°
d° = 118°
then,
d° = a° = 118° (crosspounding angle)
then,
a° = b° = 118° (vertically opposite angle)
I hope you can know this answer
