AB 7 8 9 BC 4 13 m B 33 7 m C 56 3 10 acute 11 right Pythagorean triple 12

# Ab 7 8 9 bc 4 13 m b 33 7 m c 56 3 10 acute 11 right

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AB = 7 . 8 9. BC = 4 13 , m B = 33 . 7 , m C = 56 . 3 10. acute 11. right, Pythagorean triple 12. obtuse 13. right 14. acute 15. obtuse 16. x = 2 17. x = 2 110 18. x = 6 7 19. 2576.5 ft. 20. x = 29 . 2 21. AC = 16 . 1 , m A = 41 . 6 , m C = 63 . 4 22. m A = 123 . 7 , m B = 26 . 3 , m C = 30 92 Chapter 9 Geometry - Second Edition, Chapter 9, Answer Key 9.1 Geometry - Second Edition, Parts of Circles and Tangent Lines, Review Answers 1. diameter 2. secant 3. chord 4. point of tangency 5. common external tangent 6. common internal tangent 7. center 8. radius 9. the diameter 10. 4 lines 11. 3 lines 12. none 93  to the radius of the circle. Therefore A , B and W are collinear. VT VW because they are tangent segments to circle A from the same point, V , outside the circle. Similarly, VW VU because they are tangent segments to circle B from V . By the transitive property of congruence, VT VU . Therefore, all three segments are congruent. 9.2 Geometry - Second Edition, Properties of Arcs, Review Answers 1. minor 2. major 3. semicircle 4. major 5. minor 6. semicircle 7. yes, d CD d DE 8. 66 9. 228 10. yes, they are in the same circle with equal central angles 11. yes, the central angles are vertical angles, so they are equal, making the arcs equal 12. no, we don’t know the measure of the corresponding central angles. 13. 90 14. 49 15. 82 16. 16 17. 188 18. 172 19. 196 20. 270 21. x = 54 22. x = 47 23. x = 25 24. A B 25. 62 26. 77 27. 139 28. 118 29. 257 30. 319 31. 75 32. 105 33. 68 34. 105 35. 255 36. 217 95 9.3 Geometry - Second Edition, Properties of Chords, Review Answers 1. No, see picture. The two chords can be congruent and perpendicular, but will not bisect each other. 2. AC 3. d DF 4. c JF 5. DE 6. HGC 7. AGC 8. AG , HG , CG , FG , JG , DG 9. 107 10. 8 11. 118 12. 133 13. 140 14. 120 15. x = 64 , y = 4 16. x = 8 , y = 10 17. x = 3 26 , y 12 . 3 18. x = 9 5 19. x = 9 , y = 4 20. x = 4 . 5 21. x = 3 22. x = 7 23. x = 4 11 24. m c AB = 121 . 3 25. m c AB = 112 . 9 26. BF FD and c BF d FD by Theorem 10-5.  #### You've reached the end of your free preview.

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• Spring '14
• Gee,Carol
• Geometry, Edition, triangle, Supplementary Angles
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