Respuesta :
Answer:
"77 degrees"
Step-by-step explanation:
If you read the questions carefully, you will see that ∠2 and ∠4 are opposite angles to each other, or vertical angles.
We know that vertical angles are EQUAL to each other.
Hence,
∠4 = ∠2 [which is 77]
So, ∠4 = 77°