Answer:
∠1 = 58°
∠2 = 122°
∠3 = 122°
Step-by-step explanation:
∠2 = ∠3
∠2 = (360 - 58 - 58)/2 = 122°
the more you know
the chain will be 12 chain links long
you add 7 and five for an overall answer of 12