Definitions
Parts
Equations
Simple Problems
Medium Problems
Difficult Problems
100
the distance around a circle
What is the circumference?
100
Point B represents
What is the center?
100
1/2d
What is radius?
100
The radius of a circle is 17 ft. Find its circumference in terms of
pi
.
What is
r=34pi?
100
In circle O, m∠POQ=144 degrees. Find the measurement of arc PQ in degrees.
What is 144 degrees?
100
In circle N with m∠MNP=42o, find the m∠MQP.
What is 21o?
200
the amount of square units inside a circle
What is Area?
200
line segments XY and YZ reprsent these
What are Chords?
200
2r
What is diameter?
200
the area of this circle rounded to the nearest tenth units
What is A=113.1 units squared?
200
If the measurement of arc THN=188o and the measurement of arc VD=92o, find m∠VZD. 
What is the m∠VZD=140o?
200
line JK is tangent to circle O at point J, and line JE is a secant line. If the measurement of arc JFE=238o, find m∠EJK.
What is 61o?
300
the distance between two points along a circle
What is Arc Length?
300
Line PT represents this
What is a Tangent?
300
2pir
What is Circumference?
300
Given circle E, if CD=36 units, solve for line segment EA. Round your answer to the nearest tenth if necessary.
What is line segment EA=18 units?
300
If the measurement of arc WX=62o and the measurement of arc NL=176o, find m∠V.
What is the m∠V=57o?
300
In circle D, m∠CFE=57o. Solve for x if the measurement of arc CE=(10x−25)o. If necessary, round your answer to the nearest tenth.
What is x=13.9?
400
the amount of space enclosed by two radii and the circle itself
What is Sector Area?
400
Line PBQ, pictured, represents
What is a Secant?
400
pir^2
What is Area?
400
the m∠BLT as pictured (not bacon, lettuce, and tomatoes)
What is m∠BLT=90o?
400
If the measurement of arc UPE=216o and the measurement of arc LS=58o, find m∠LBS.
What is 137o?
400
line CX is tangent to circle O at point C, and line CT is a secant line. If the measurement of arc CDT=244o, find m∠TCX.
What is m∠TCX=58o?
500
a line segment connecting the center of a circle to any point on the circle
What is a radius?
500
the letters ABC create this
What is an Inscribed Angle?
500
theta/360(2pir)
What is Arc Length?
500
the radius of a circle whose equation is
(x−5)^2+(y−7)^2=4
What is r=2?
500
In circle B, the m∠ABC=138o, find the m∠ADC.
What is the m∠ADC=69o?
500
The area of a circle is 315 sq units. What is the length of the radius rounded to the nearest whole number?
What is 10 units?
600
a line segment passing through the center of a circle that connects two points on the circle
What is a diameter?
600
Angle EDF, as pictured, is this
What is an Exterior Angle?
600
theta/360^o(pir^2)
What is Sector Area?
600
What is the center of a circle whose equation is
(x−3)^2 +(y+2)^2 =36
What is the circle's center=(3,-2)?
600
If the measurement of arc KX=32o and m∠G=36o, find the measurement of arc RU.
What is the measurement of arc RU=104o?
600
Right triangle NOP is inscribed in circle R. Find the area of the shaded region. Round your answer to the nearest tenth if necessary.
What is 1140.3 units squared?