Answer:
Step-by-step explanation:
3. = 180 - 142
= 38 angles on a straight line equal 180
4. =142 - vertically opposite
5. = 38 alternate angles, alternate with angle 1
6. = 142 - alternate angles
7. = 142 - corresponding angles, corresponding with angle 2
8. = 38 - vertically opposite
9. = 43 - corresponding to angle 7
10. = 137 - vertically opposite
11. = 180 - 137 = 43 - angles on a straight line equal 180 degrees
12. = 43 - vertically opposite to angle 6
13. = 43 - alternate to angle 6
14. = 137 alternate angles
