Answer:
n
Step-by-step explanation:
the answer is -60, which is not an option
Answer:
10
Step-by-step explanation:
you take 2 times 5
∠1 + ∠3 + 90° = 180°
∠1 + ∠3 = 90°
∠3 = ∠4 (vertically opposite angles)
∠1 + ∠4 = 90°
Therefore, the answer is ∠1 + ∠4
A vertical line on the value x = -4
