Circles

Vocabulary/Circumference/Area

100

Circumference is the _____________ of a circle. 

Perimeter

200

Find the area and circumference of the circle. 

A = 63.62 mm squared

C = 9pi or 28.27 mm 

300

Find the diameter of a circle with an area of 415. 48 square inches. 

23 inches 

400

Name a minor arc, major arc, semicircle, diameter, and radius 

Answers will vary. 

500

Name:

Tangent

Secant

Point of Tangency

Inscribed Angle

Central Angle

Answers will vary.

Central Angles/Arc Angles/Arc Length

100

A central angle is angle with a vertex at the __________ of the circle and its two sides are _______.

center; radii 

200

Find the length of the bolded arc. 

4.58 inches

300

Find x

6

400

Solve for x. 

21

500

If WS is 4.5 inches, find the length of arc TS.

7.62 inches 

Chords/Inscribed Quads

100

Solve for x. 

13

200

Find the measure of arc RS

71 degrees 

300

Find x

13

400

Find VW

24

500

214 degrees 

Tangents/Equations of Circles

100

A tangent line intersects a circle at ______ point, called the _______________________.

one; point of tangency 

200

Find x.

14

300

Is Segment RQ tangent to the circle? 

Yes 

400

Find the center and radius of each circle given its equation. 

(9,4) 20

(-1, 1) 16

(-6, 0) 9.5 

500

Write an equation of circle given this information. It must be simplified.

(x+2)^2+(y+11)^2=81

(x+4)^2+y^2=47