Chapter 10 Circles: Practice Test

1.Find the measure of arc AB

• 360

• 60

• 120

• 240

2.Find the measure of arc DE

• 175

• 320

• 40

• 80

3.If m∠X=152°, find m∠Z

• 152

• 208

• 28

• 180

5.What is the center and radius of a circle with an equation of (x + 4)² + (y - 2)² = 25?

• (4, -2) r = 25

• (-4, 2) r = 25

• (4, -2) r = 5

• (-4, 2) r = 5

6.Diameter AC = 12 and tangent DE = 8, What is the length of BE?

• 5

• 6

• 8

• 10

7.Which equation would you use to solve for x?

• x = (130 - 30) ÷ 2

• x = (130 + 30) ÷ 2

• x = 130 ÷ 2

• x = 30

8.Find the measure of arc CD

• 54

• 126

• 45

• 81

10.What is the equation of the circle graphed

• (x + 3)² + (y + 3)² = 3

• (x - 3)² + (y - 3)² = 3

• (x - 3)² + (y - 3)² = 9

• (x + 3)² + (y + 3)² = 9

Find the circumference of the circle.

• 28.26 in.
• 14.13 in.
• 63.585 in.
• 9 in.

Find the value of x.

• 9

• 64

• 225

• 15