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AnimeBrainly
The measurement of ∠1 is half of the central angle's length 120

120/2 = 60

60° is your answer

Reason: This is because an inscribed angle is half of the arc length.
               A central angle is the same measurement as the arc length.


hope this helps
LlES

Answer: 60

Step-by-step explanation: Since we already got 120 all we got to do is divide by 2. = 60

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