Answer:
1. 50°
2. 90
3. 60
4. 60
5. 60
6. 60
7. 100
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Explanation:
m∠1 = 50° 180 = m∠1 + 40 + 90
m∠2 = 90° Vertical angles
m∠3 = 60° 180 = m∠3 + 90 + 30
m∠4 = 60° Vertical angles
m∠5 = 60° 180 = m∠5 + 60 + 6
m∠6 = 60° Vertical angles
m∠7 = 100° 180 = m∠7 + 60 + 20
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