1. 9–14. Answers may vary. Samples are given.
Circles and Arcs
GEOMETRY LESSON 7-6
Pages Exercises
1. 25
2. 29
3. 32
4. 22
5. 25
6. 58
7. 32
8. 137
9–14. Answers may vary. Samples are given.
9. ED
10. FEB
11. BFE
12. FE and ED
FOE
FOE and BOC
19. 52
22. 90
7-6

2. May 9, 2003
Circles and Arcs
GEOMETRY LESSON 7-6
24. 90 cm ft m
in. m cm
in. cm ft m
in. m m 7 2 23 5 4
40. no
41.
7-6

3. 54. Travel 220° from Neponset to East St. 55. 100 in. 56. 50 in.
May 9, 2003
Circles and Arcs
GEOMETRY LESSON 7-6
42. 70
45. 55
48. Check students’ work.
49. a. 6
b. 30
c. 120
50. a. 0.5
b. 2.5
c. 10
52. 38
53. 40
54. Travel 220° from Neponset to East St.
in.
in.
in.
58. 3:4 ft
60. a. 25,000 mi
b. The estimate seems quite accurate.
61. (2.5, 5)
100 3
7-6

4. 70. a. Answers may vary. Sample: BD and FE
Circles and Arcs
GEOMETRY LESSON 7-6
units ft
in. m cm
67. Outside; a point on the outside travels farther in the same time, so it goes faster. cm
units
70. a. Answers may vary. Sample: BD and FE
b. 35
in.; assumptions may vary. yd
73. B
74. G 1 2
75. [2] (2 •6) + (2 •4)
= = 10 ; m or about m
[1] no work shown
76. m 1 = 30; m 2 = 15; m 3 = 75; m 4 = 30
77. about 18.6 mm
mm2
79. No; it could be an isosc. trap.
7-6

5. 80. Yes; if the diagonals bisect each other, it is a .
May 9, 2003
Circles and Arcs
GEOMETRY LESSON 7-6
80. Yes; if the diagonals bisect each other, it is a .
81. Yes; if one pair of sides is both and ||, it is a .
82. always
83. never
7-6