Geo_Book_Answers
Geo_Book_Answers
Geo_Book_Answers
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<strong>Answers</strong> to Exercises<br />
CHAPTER 2 • CHAPTER 2<br />
CHAPTER 2 • CHAPTER<br />
LESSON 2.1<br />
1. “All rocks sink.” Stony needs to find one rock<br />
that will not sink.<br />
2. If two angles are formed by drawing a ray from a<br />
line, then their measures add up to 180°.<br />
3. 10,000, 100,000, ....Each term is 10 times the<br />
previous term.<br />
4. 5 ,1,....(Written 6 with the common<br />
denominator 6, the pattern becomes<br />
1 , 2 , 3 , 4 , 5 , 6<br />
6 6 6 6 6 6 ,....)<br />
5. 17, 21 6. 28, 36<br />
7. 21, 34 8. 49, 64<br />
9. 10, 24 10. 64, 128<br />
11. 12.<br />
13. 14.<br />
15. 16.<br />
17. 1, 4, 7, 10, 13 18. 15, 21, 28, 36, 45<br />
19. <strong>Answers</strong> will vary.<br />
20. sample answers:3,6,12,24,48,...and 4,8,12,<br />
16, 20, . . .<br />
21. <strong>Answers</strong> will vary.<br />
22. 7th term: 56; 10th term: 110; 25th term: 650<br />
23. Conjecture is false; 14 2 196 but 41 2 1681.<br />
24. 11,111 11,111 123,454,321. For the sixth<br />
line, if 111,111 is multiplied by itself, then the<br />
product will be 12,345,654,321. But 1,111,111,111 <br />
1,111,111,111 1,234,567,900,987,654,321.<br />
25. 26.<br />
27. 28.<br />
29. possible answers:<br />
30. sample answer:<br />
31. collinear 32. isosceles<br />
33. dodecagon 34. parallel<br />
35. protractor 36. radius<br />
37. diagonal 38. regular<br />
39. 90° 40. perpendicular<br />
41. sample answer: 42. sample answer:<br />
A G<br />
N T<br />
I<br />
43. sample answer: 44. possible answer:<br />
45. Methods will vary. It is not possible to draw a<br />
second triangle with the same angle measures and<br />
side length that is not congruent to the first.<br />
C<br />
40 60<br />
A 9 cm B<br />
A C Clearly AC <br />
does not<br />
bisect A<br />
or C.<br />
ANSWERS TO EXERCISES 23<br />
<strong>Answers</strong> to Exercises