Answers to Chapter 7 Practice Test A
1. An upside down capital T.
2. ll
3. 2
4. 14
5. -10 - y
6. 180°
7. 360°
8. 110°
9. 40°
10. false
11. 1440° Remember the
formula is (n - 2) × 180°
12. C
13. -3
14. -3
15. -7.75
16. n = 28
17. n = 50
18. n = -16
19. n = 5
20. n = -27
21. n = -y + a
22. n = -196
23. n = 1000
24. n = 65
25. < 1 = 130°
Look for the quadrilateral.
< 2 = 50°
< 3 = 130°
< 4 = 120°
< 5 = 110°
< 6 = 50°
26. < 1 = 140°
Look for the quadrilateral.
< 2 = 40°
< 3 = 30°
< 4 = 50°
< 5 = 60°
< 6 = 50°
27. < 1 = 110°
Look for the quadrilateral.
< 2 = 80°
Remember alternate interior angles
< 3 = 85°
< 4 = 95°
< 5 = 165°
< 6 = 95°
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