Geometry; 1/30

We talked about the results of our final exam today in class and went over the schedule moving forward.  We stopped for the final in the middle of chapter 7, so today's lesson was a quick review for the chapter 7 quiz that will take place tomorrow.  We went over how to work with similarity problems and how to find the scale factor with a variety of different figures.  The students then got a good chunk of the period to work on the chapter 7 quiz review sheet.  Answers will be posted for this review sheet later on in the day.


Assignment:  Chapter 7 Quiz review


Ratio and Proportion

1.  3:4
2.  5:4
3.  2:3
4.  5:2
5.  1:5
6.  5:2
7.  8/5
8.  2/15
9.  2:5:10
10.  10:7:17
11.  3/4
12.  5/4
13.  16
14.  3/4
15.  10/4  or 5/2
16.  5/10 or 1/2 or x + 2 / 8
17.  x = 15/7
18.  x = 48
19.  x = 16
20.  27
21.  13.3
22.  27
23.  16
24.  18
25.  18
26.  15

Similar Polygons

1.  sometimes
2.  always
3.  always
4.  sometimes
5.  sometimes
6.  never
7.  5:9
8.  82
9.  54
10.  36k/5
11.  5:9
12.  x = 29;  y = 30
13.  x = 21;  y = 15
14.  x = 15;  y = 12
15.  x = 10.67;  y = 15

Similarity Diagram Problems

4. a. 2:1
b.  2
c.  150
d.  10
e.  1:2

5. a.  x = 11;  y = 9
b.  x = 10.7;  y = 120
c.  x = 39.4;  y = 23.1
d.  x = 7.5;  y = 166

Proportion Problems

14.  a = 23
16.  x = 13
18.  n = 3/2
20.  x = 14
22.  b = 3
24.  x = 32/11