Answer:
below
Step-by-step explanation:
a) The angles on a straight line add up to 180° (so the sum of ∠b and 49° is 180°)
b) Congruent. (Opposite angles are congruent - Opposite angles are non-adjacent angles formed by two intersecting lines).
c) b = 180 - 49 = 131°
d) c = 49°
