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1. Vocabulary Arcs Segments Equations of Circles Angles 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

2. A line that intersects a circle at exactly one point.

3. What is a tangent?

4. An arc that measures less than 180 degrees.

5. What is a minor arc?

6. An angle with a vertex on the circle and legs in the interior of the circle.

7. What is an inscribed angle?

8. A point where a circle meets a tangent.

9. What is a point of tangency?

10. A segment that has its endpoints on the circle.

11. What is a chord?

12. A C If chord AC = chord CD, then what can we assume about their arcs? B D

13. arc AB = arc CD

14. B C Find the measure of arc AD. 7xo (5x+18)o A D

15. 94.5o

16. 130o Find x. xo

17. X = 100o

18. A (4x + 50)o 30o 3xo C B Find the measure of arc AB

19. 90o

20. 17.3

21. 5 x Find x. 4 2

22. X = 10

23. 5x+27 Find x. Assume that segments that appear to be tangent are tangent. 14x

24. 3

25. Find x. 16 x 12 Assume that segments that appear to be tangent are tangent.

26. 13.9

27. 5 x 3 9 Find x.

28. 4

29. Find x. X+16 16 x

30. 8

31. In an equation of a circle, the (h, k) values represent the __________________ and the sum represents the ____________________.

33. A circle with the equation (x-8)2 + (y+13)2 = 196 would have a center at ______ and a radius of ______.

34. (8, -13) r = 14

35. Write the equation of a circle with a center at (-3,6) and a radius endpoint at (0,6)

36. (x+3)2 + (y-6)2 = 9

37. Graph the circle with the equation: x2 + (y-2)2 = 25

38. Write an equation for a circle whose diameter has endpoints (-2, 2) and (2, 2)

39. X2 + (y-2)2 = 4

40. 135o

41. 75o Find m<x. xo

42. 37.5o

43. Find x. Assume segments that appear to be tangents are tangent. xo

44. 90o

45. 90o, 90o

46. Find the m<AED. B A E 94o 74o D C 92o