Answer:
m arc 1 = 65°, m arc 3 = 129°, m ∠9 = 25.5°, m ∠ 10 = 57.5°
Explanation:
m arc 1 => 180 - 115 = 65°
m arc 3 => 180 - 51 = 129°
m ∠9 => 51 ÷ 2 = 25.5°
m ∠ 10 => 115 ÷ 2 = 57.5°
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