We continued to work on the reviews for the final today in class. Answers will be posted for the reviews later in the weekend.
Assignment: Final reviews #1, #2, and #3
Review #1
1. triangle QRS
2. AB/QR = 10/15
3. AB / QR = x / 9 = 14 / 21
4. x / 9 = 14 / 21 x = 6
5. x = 11.25; angles 45, 56.25, 78.75
6. x = 10.7
7. XY --> YZ --> XZ
8. 1/3
9. x = 5
10. y = 3.3
11. 3/5
12. 20
13. 27
14. 10
15. a. BC b. BC c. BD
16. not possible
17. triangle ABC similar to triangle HBJ; SAS
18. triangle ABC similar to triangle AFG; SAS
19. triangle ABC similar to triangle EDF; SSS
20. triangle ABC similar to triangle STC; AA
21. no conclusion
22. statement reasons
AB parallel to CD given
BC parallel to AE given
angle B congruent to angle D if lines parallel, AIA congruent
angle CBD congruent to angle AEB if lines parallel, AIA congruent
triangle ABE similar to triangle CDB AA for similar triangles
BC/EA = BC / EB corr. sides of sim. triangles proportional
BC * EB = EA * BD cross multiply
23. y = 8; x = 8 radical 5; z = 4 radical 5
24. x = radical 41
25. x = 12
26. altitude = 3 radical 3
27. obtuse
28. acute
29. right
30. not a triangle
31. x = 20 ; y = 20 radical 3
32. x = 9
33. x = 10; y = 10 radical 2
34. x = 3 radical 3
35. angle A, angle C, angle B
36. EF , DF, DE
Review #2
37. BW = 13; RB = 7.5; RW = 10.6
angle B = 54.8; angle R = 90; angle W = 35.2
38. x = 60
39. x = 28.6
40. x = 1382.2 feet
41. 60
42. 240
43. 60
44. 300
45. J
46. E
47. B
48. A
49. G
50. I
51. H
52. C
53. D
54. F
55. arc CDA
56. angle BAD
57. 100 degrees
58. 40 degrees
59. 75 degrees
60. sketch
61. sketch
62. sketch
63. sketch
64. 130 degrees
65. 8
66. 34 degrees
67. 6
68. x = 4
69. 146 degrees
70. 40 degrees
71. 8
72. 70
73. 80
74. 30
75. 70
76. 75
77. 25
78. 120
79. 50
80. 46
81. area = 309.1
82. 100 radical 3
83. 405
84. 384 radical 3
85. 75
Review #3
86. 28
87. 98
88. area = 615.4; circumference = 87.9
89. arc = 2 pi
90. 4 / 49
91. perimeter = 98; area = 24
92. a. 1/100; b. 6/25
93. not possible
94. yes
95. a. angle JKM b. angle MKL c. angle JMK
96. angle 2 greater than angle 1
97. angle LPM greater than angle NPM
98. B = 121 pi ; LA = 220 pi ; TA = 462 pi ; Vol. = 1210 pi
99. B = 24 ; LA = 96 ; TA = 144 ; Vol. = 96
100. a. area = 900 pi b. volume = 4500 pi
101. a. r = 7; b. LA = 238 pi
102. r = 9
103. a. 2/5 b. 4/25 c. 24.6 pi
104. a. 3/4 b. x = 32 c. 27 pi
105. yes, they are similar; they both have the same scale factor
106. a. 7/10 b. 343 / 1000
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