Vocabulary
Circumference
Missing Segments
Find Center and Radius
Equation of a Circle
100
Round plane figure whose boundary consist of points
What is a circle
100
What is the circumference if the Diameter is 18
D=56.52 in
100
Using the sector formula where A=8 B=x C=6 and D=10
x=4
100
A:(x-4)2 +(y+5)2=25
c=(4,-5) r=5
100
Circle with center (0,0) radius 4
x^2+y^2=16
200
a straight line from the center of the circle touching the edge
What is radius
200
What is the arc length and sector area if the angle is 23 degrees and the radius is 12 in
A=28.9 in^2 Arc=4.8 in
200
Using the sector formula where A=4 B=x C=5 and D=8
x=10
200
B:(x+3)2+(y-5)2=4
c=(-3,5) r=2
200
Circle with center (0,1) radius 7
x^2+(y-1)^2=49
300
A straight line passing from side to side through the center
What is diameter
300
What is the circumference if the diameter is 12 in
D=37.68 in
300
Using the sector formula where A=10 B=5 and C=3 D=x
x=5
300
A:(x+7)2+(y+7)2=16
c=(-7,-7) r=4
300
circle with center (2,3) radius 3
(x-2)^2+(y-3)^2=9
400
A straight line that cuts through two or more parts
What is secant
400
What is the circumference and area if the diameter is 14 in
C=43.96 in A=153.86 in^2
400
Using the chord formula A=7 B=7 C=x D=10
x=4.9
400
B:(x+9)2+(y+9)3=9
c=(-9,-9) r=3
400
Circle with center (1,5) radius 4
(x-1)^2+(y-5)^2=16
500
The distance around something
What is circumference
500
What is the circumference if the diameter is 16 in
C=50.24 in
500
Using the tangent formula A=4 B=4 C=x
x=0
500
A:(x+5)2+(y+5)2=100
c=(-5,-5) r=10
500
Center of circle (3,2) radius 2
(x-3)^2+(y-2)^2=4
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