Name ____________________________________
10.5 – 10.7 Homework Packet
Hour_____
LESSON 10.5
For use with pages 680–686
Find the measure of each numbered angle or arc.
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Find the measure of each numbered angle or arc.
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Find the value of x.
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40. Transportation A plane is flying at an altitude of about 7 miles above Earth. What is the measure of arc
TV that represents the part of Earth you can see? The radius of Earth is about 4000 miles.
LESSON 10.6
For use with pages 688–695
In Exercises 41 – 47, find the value of x.
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LESSON 10.7
For use with pages 699–705
Match the equation of a circle with its description.
59. x2 + y2 = 4
A. center (–1,4), radius 4
60. x2 + y2 = 9
B. center (–2,–3), radius 3
61. (x + 1)2 + (y – 4)2 = 16
C. center (0, 0), radius 2
62. (x + 2)2 + (y + 3)2 = 9
D. center (2, 5), radius 3
63. (x + 3)2 + (y– 5)2 = 16
E. center (–3, 5), radius 4
64. (x – 2)2 + (y – 5)2 = 9
F. center (0, 0), radius 3
Give the center and radius of the circle.
65.
x2 + y2 = 25.
68. (x + 1)2 + (y – 1)2 = 4
66.
x2 + (y – 4)2 = 9
67.
(x – 5)2 + y2 = 16
69.
(x – 2)2 + (y – 4)2 = 16
70.
(x + 4)2 + (y – 2)2 = 25
Write the standard equation of the circle.
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76.
Write the standard equation of the circle with the given center and radius.
77.
Center (0, 0), radius 2
78.
Center (0, 3), radius 2
80. Center (5, –6), radius 1
81. Center (0, 9), radius 7
83.
84. Center (–5,–1), radius 8
Center (0, 0), radius 10
79. Center (2, 0), radius 3
82.
Center (–3, 7), radius 6