We spent some time reviewing some of the homework problems before taking one more look at how to work with regular polygons. We then prepared for the quiz on Monday by making a note card of all the formulas we have been studying this chapter. All of these area formulas will be used on the quiz on Monday. We also reviewed the special right triangle shortcuts and the trig ratios. The students then got started on their review sheet for the chapter 11 quiz.
Assignment: Chapter 11 quiz review
Practice 43: Areas of Polygons
1. 35
2. 72
3. 36 radical 3
4. 77
5. 60
6. 60
7. central angle = 60; radius = 18; apothem = 9 radical 3; area = 486 radical 3
8. 50
9. 34
10. 48
11. 78
12. 42
13. 48
14. 27 radical 3
15. 18
Areas of Regular Polygons (just do the odds)
1. a. 8; b. 12
3. 4 radical 3
5. 2 radical 3
7. 24 radical 3
9. 48
11. 64
13. 30x
15. 216 radical 3
17. 27 radical 3
19. 12 radical 3
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