Vocabulary
Area & Arc Length
Arc Measure
Angles
Equations of Circles
100
A) This line goes from the center to the side of a circle.
B) This line goes from a point on the circle through the center to a point on the opposite side.
A) Radius
B) Diameter
100
Find the length of arc DB? (in terms of
pi
10/3pi
100
What is the measure of arc EA
90˚
100
CAD is the diameter. What is the measure of angle CDE?
63°
100
What is the standard form equation of a circle?
(x-h)2+(y-k)2=r2
200
A) The distance around a portion of the circle.
B) The arc formed when a line or lines cut across a circle.
A) Arc Length
B) Intercepted Arc
200
Find the are of the sector. In terms of
pi
25pi
200
What is the measure of arc CDA?
200˚
200
Find the value of x.
x = 20
200
What is the center and radius of a circle with equation (x-7)2+(y+3)2=16
center: (7,-3)
radius: 4
300
A) An angle whose vertex is at the center of the circle.
B) An angle whose vertex is on the circle and whose sides are chords of the circle.
A) Central Angle
B) Inscribed Angle
300
What is the radius of a circle that has a sector area of 12pi cm2 and a central angle of
120 °
?
6 cm
300
What is the measure of arc HF?
90˚
300
What is the measure of ∠TRU?
131°
300
Which circle is the correct graph of (x+4)2+(y-4)2=4?
Circle B
400
A portion of the area of a circle
Sector
400
What is the area of the shaded portion in terms of pi?
3pi cm^2
400
What is the measure of arc GFE?
136˚
400
What is the measure of ∠TSU?
65.5°
400
Write the equation of a circle with center (-2,0) and radius of 4
(x+2)^2+y^2=16
500
The formula to find the area of a sector.
(m)/(360˚)=(sec)/(pir^2)
500
What is the length of arc JK in terms of pi?
2pi cm
500
What arc has a measure of arc GJ?
64˚
500
What is the measure of ∠C?
140°
500
Write the equation of a circle with center (2,4) and a area of
36pi
.
(x-2)2+(y-4)2=36