Circle Vocabulary
Circumference Diameter and Radius
Angles with vertices inside and outside of the circle
Area of Circles
Sector Area and Arc Length
Equations of circles
100
What is the name of the part labeled AB in red?
arc
100
What is the red part shown in the picture?
diameter
100
What kind of angle is angle ABC?
Inscribed Angle
100
What is the formula for the area of a circle?
A = 𝛑r2
100
What would you put over 360 in the formula for this problem?
85
100
Using the equation of a circle, how do you find the center?
(h,k)
200
A segment that has 2 endpoints on the circle is called a__________.
chord
200
6.2 mi is the length of the ______ of the circle.
radius
200
Solve for b
8
200
When finding the area of a circle, what do you have to do to the radius?
square it
200
What is the area of the blue sector? Round to the nearest tenth.
33.5
200
What is the center of this circle?
(-4,5)
300
A special chord that goes directly through the center of a circle is a __________.
diameter
300
What is the circumference of a circle with a diameter of 10 inches?
Round to the nearest tenth.
31.4
300
Solve for x.
43
300
Find the area of the circle. Round to the nearest tenth.
120.8
300
What is the length of the blue arc? Round to the nearest tenth.
8.4
300
What is the radius of this circle?
6
400
Line AD is a ___________.
Tangent
400
What is the circumference of this circle? Round to the nearest hundredth.
38.96
400
Solve for x
49
400
What is the area of a circle with a radius of 15? Round to the nearest hundredth.
706.86
400
Find the length of arc XY. Round to the nearest tenth.
4.5
400
Write the equation for this circle.
(x-2)2+(y+1)2=16
500
A line that intersects a circle in two places is called a ________.
secant
500
If the circumference of a circle is 293, what is the diameter? Round to the nearest tenth.
93.3
500
Solve for x.
28.8°
500
Find the area of this circle. Round to the nearest tenth.
254.5
500
What is the area of the blue sector? Round to the nearest hundredth.
3.27
500
Write the equation of a circle with a center of (2,6) which contains the point (3,9).
(x-2)2+(y-6)2=10