Vocab
Properties
Angles
Tangents & Equations
Arcs, Chords & Sectors
100
A line segment that connects the center of a circle to a point on that circle.
What is the radius?
100
The equation to find the area of a circle.
What is πr^2?
100
The total degrees around the center of a circle.
What is 360 degrees?
100
The number of times a tangent line touches a circle.
What is exactly once?
100
A line segment that connects two points on a circle.
What is a chord?
200
The longest chord of a circle, or twice the radius.
What is the diameter?
200
The equation to find the circumference of a circle.
What is 2πr or πd?
200
An angle whose vertex is on the center of a circle, and whose measure is equal to its intercepted arc.
What is a central angle?
200
The name of the point where a tangent line touches a circle.
What is the point of tangency?
200
The measure of the minor arc created by a central angle of 72 degrees.
What is a 72 degrees?
300
The distance around the outside of a circle, or a circle's length.
What is the circumference?
300
The radius of a circle who area is 201.06.
What is 16?
300
An angle whose vertex lies on the circle, and whose measure is half the measure of its included arc.
What is an inscribed angle?
300
The measure of the angle created by a tangent line and a circle's radius or diameter.
What is 90 degrees?
300

The area of the sector formed by a major arc intercepted by a central angle of 240 degrees of a circle with a radius of 5 cm.

What is 52.4 cm2?

400
An arc greater than 180 degrees.
What is a major arc?
400
The circumference of a circle whose radius is 12.
What is 75.4?
400
The measure of the major arc made by an inscribed angle of 130 degrees.
What is 260 degrees?
400

Where is the center and what is the radius of the circle:

(x+2)2 + (y - 4)2 = 49

What is (-2, 4) and 7?

400

The radius of a circle with a central angle of 30 degrees that forms a sector with area  12pi in2.

What is 12 inches?

500
The portion of a circle enclosed by two radii and an arc.
What is a sector?
500
The circumference of a circle whose area is 28.27.
What is 18.85?
500
The value of x, if an inscribed angle has a measure of 34 degrees, and its intercepted arc has a measure of 4x+8.
What is 15?
500

Write the equation of the circle with center (-4, 3) and radius 4.

What is (x+4)2 + (y-3)2 = 16

500

The degree measure of the arc of a sector with area 36pi if the area of the circle is 144 pi.

What is 900?

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