Answer:
∠ 1 = ∠ 3 = 44°
Explanation:
∠ 1 and ∠ 8 are same- side exterior angles and sum to 180° , that is
∠ 1 + ∠ 8 = 180°
∠ 1 + 136° = 180° ( subtract 136° from both sides )
∠ 1 = 44°
∠ 1 and ∠ 3 are vertically opposite angles and are congruent , so
∠ 3 = ∠ 1 = 44°