Circle Vocab
Area &
Circumference
Circumference
Central Angles
& Arcs
& Arcs
Arc Length
Chords & Arcs
100
Radius times two gives you the _________.
Diameter
100
Circumference is just another word for _______.
Perimeter
100
What is the measure of arc ED?
81
100
What is the formula for arc length?
L = x*C / 360
100
If LM = 41-2x and NP = 7x+5, find x
.
x=4
200
Diameter divided by two gives you the _______.
Radius
200
What is the formula for area?
A = pi *r ^2
200
What is the measure of the central angle labeled?
120
200
Find the length of the arc. Round to the nearest tenth.
60.5
200
If arc UV = 8x-17 and arc WV = 5x+52, find x.
x=23
300
What is a set of all points equidistant from a center point?
Circle
300
What are the two formulas for circumference?
d*pi and 2*pi*r
300
What is the measure of angle QRP?
154
300
Find the arc length. Round to the nearest tenth.
56.52
300
If arc LM = 8x-56 and arc NP = 5x+22, find arc LP.
LP = 17
400
A curve on a circle is called a(n) _______.
Arc
400
What is the circumference of a circle when r=5?
31.4
400
What is the measure of arc BFE?
180
400
Find the arc length. Round to the nearest hundredth.
19.28
400
If arc BC = 9x-53 and arc CD = 2x+45, find arc BCD.
BCD = 146
500
A______ is an angle with a vertex at the center and the two sides are radii.
Central Angle
500
What is the area of a circle when d=10
78.5
500
What kind of arc is CBF?
Major Arc
500
Find the arc length. Round to the nearest hundredth.
55.82
500
If JG=JF=GD=14, and arc CD = 136, find arc CE.
CE = 88