Answer:
∠ 1 = 131° , ∠ 2 = 49°
Step-by-step explanation:
∠ 1 and ∠ 4 are a linear pair and sum to 180° , that is
∠ 1 + ∠ 4 = 180°
∠ 1 + 49° = 180° ( subtract 49° from both sides )
∠ 1 = 131°
∠ 2 and ∠ 4 are vertically opposite angles and are congruent , so
∠ 2 = 49°
