Step-by-step explanation:
1. 3
2. 4
3. 7
4. 8
5. 1
6. 2
7. 5
8. 6
9. 1 and 7
10. 3 and 5
11. 2 and 8
12. 4 and 6
13. 4 and 7
14. 3 and 8
15. 3 and 4
16. 7 and 8
17. 2 and 6
18. 1 and 5
19. 1 and 2
20. 5 and 6
B
1. 102°
2. 78°
3. 102°
4. 78°
5. 102°
6. 78°
7. 102°
8. 108°
9. 72°
10. 108°
11. 72°
12. 108°
13. 72°
14. 108°
