VOCABULARY
Central Angle
ARC LENGTH
SECTOR AREA
Circumference and Area
100
The term used for distance around a circle.
What is Circumference?
100
Angle measure of a full circle.
What is 360 degrees?
100
What is the formula to solve for Arc Length?
(Central Angle/360)2πr
100
What is the formula to solve for the Area of a Sector?
(Central Angle/360)πr2
100
What is the formula for circumference?
200
A portion of the circumference of a circle.
What is Arc Length?
200
Angle measure of half a circle
What is 180o
200
Central Angle:60
Radius:12
Calculate the Arc Length
12.6 units
200
Central Angle:60
Radius:8
Calculate the area of the sector.
33.5 units2
200
What is the formula for the area of a circle?
300
A portion of the area of a circle.
What is a Sector?
300
If the measurement of the arc is 45o, what is the measurement of it's central angle?
What is 45 degrees?
300
Central Angle: 50
Diameter: 10
Calculate the Arc Length
4.36units
300
Central Angle:120
Radius:9
Calculate the area of the sector
84.8 units2
300
If a circle has a diameter of 17m what is the radius of the circle?
8.5m
400
The angle created when two radii meet at the center of a circle.
What is Central Angle?
400
If the angle measure of the arc is 80o, what is the measurement of the central angle?
What is 80 degrees?
400
Central Angle: 36
Radius:12
Calculate the Arc Length
7.53units
400
Central Angle: 65
Diameter: 26
Calculate the area of the sector
95.86units2
400
Find the area of a circle with a diameter of 8m.
201.06m2
500
A line segment connecting two points on a circle.
What is a chord?
500
If the measurement of the central angle is 36o, what is the arc measure?
What is 36o degrees?
500
Central Angle:64
Radius:5
Calculate the Arc Length
5.58units
500
Radius of 1.5
Central Angle: 270
Calculate the area of the sector
5.3 units2
500
Find the circumference of a circle with a radius of 2in.
12.57in