Geometry; 1/29

We spent today reviewing some key concepts in preparation for the chapter 6 test tomorrow.  We went over inequality proofs one more time.  Conditional statements and venn diagrams of statements were also reviewed.  Finally we went through 2-3 drawings of pairs of unequal triangles together.  The students then got started on their review sheet.


Assignment:  Chapter 6 Review worksheet

Review Sheet Answers

1.  yes;  12 + 9 > 15
2.  no;  6 + 9 < 16
3.  no;  28 + 13 = 41
4.  yes;  8.5 + 6.5 > 13.5
5.  6 < x < 24
6.  9 < x < 31
7.  8 < x < 12
8.  15 < x < 49
9.  3 < x < 13
10.  27 < x < 69
11.  3 < x < 33
12.  6 < x < 26
13.  lg. angle A;  sm. angle B
14.  lg. angle A;  sm.  angle C
15.  lg.  angle C;  sm angle A
16.  angle C --> angle B -->  angle A
17.  angle C --> angle B -->  angle A
18.  If you reside in Seattle, then you reside in WA state.  (true)
19.  If you reside in WA state, then you reside in Seattle.   (false,  Richland)
20.  If you don't reside in Seattle, then you don't reside in WA state  (false, Richland)
21.  If you don't reside in WA state, then you don't reside in Seattle  (true)
22.  in rectangle, car can't be driven well;  inner circle is flat tire
23.  in rectangle is rhombuses;  inner circle is squares
24.  If you are a marathoner, then you have stamina
25.  Nick has stamina
26.  no conclusion
27.  Mia is not a marathoner
28.  no conclusion
 venn diagram:  inner circle is marathoner;  outer rectangle is stamina
29.  AC --> BC --> AB
30.  AB -->  BC -->  AC
31.  AB -->  BC --> AC
32.  AC --> BC --> AB
33.  BC -->  AC -->  AB
34.  BC -->  AC --> AB
35.  x = 8.6,  angle A = 73.4;  angle B = 18.4;  angle C = 88
         short  AC -->  BC --> AB  long
36.  x = 14;  angle A = 72;  angle B = 74;  angle C = 34
         short AB -->  BC -->  AC  long

page 231;  WE #1-8

1.  angle 1 > angle 2
2.  TR > VS
3.  XY > XZ;  XW > 12
4.  AD < CE
5.  angle 1 < angle 2;  angle 3 > angle 4
6.  angle 5 < angle 6
7.  a < b
8.  c < 10