Geometry; 3/22

We went over a few more review problems together in dealing with regular polygons and their areas.  We also went over a problem that involved using trig ratios to figure out area instead of just using triangle shortcuts.  The students then got started on their review sheets for the quiz tomorrow.


Assignment:  Chapter 11 quiz review

Practice 43 answers:

1.  35
2.  72
3.  36 radical 3
4.  77
5.  60
6.  60
7.  angle = 60 degrees ;     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.  8

Areas of Regular Polygons

3.  4 radical 3
4.  5
6.  4 radical 2
8.  36
10.  121
12.  72
16.  96 radical 3
17.  27 radical 3
19.  12 radical 3