Answer:
Step-by-step explanation:
Corresponding angles: When two parallel lines are intersected by a transversal, the acute angles on the same side are congruent & the obtuse angles on the same side of the transversal are congruent and they are called corresponding angles.
Co-interior angles: The interior angles on the same side of the transversal are called co -interior angles and they are supplementary.
a) c + 123 = 180 {linear pair}
c = 180 - 123
c = 57
a = 123 {Corresponding angles}
b = a {Vertically opposite angles are congruent}
b = 123
b) f + 82 = 180 {Linear pair}
f = 180 - 82
f = 98
d = f {Corresponding angles}
d = 98
e = d {Vertically opposite angles}
e = 98
c) h = 75 {Corresponding angles}
g = h {Vertically opposite anges}
g = 75
