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Definitions
Circumference
Arc Length
Angles Measures
Arc Measure
100
A set of points equidistant from one central point.
What is a circle?
100

Diameter = 10  What is the circumference?

What is 31.4?

100

This is the arc length of a circle with a diameter of 20 cm and a central angle of 45 degrees.

What is 7.9 cm

100
An angle which is made up of two radii whose vertex is the center of the circle.
What is the central angle?
100
If chords AB and CD are congruent, then arcs AB and CD are this.
What is congruent?
200
A line segment with one endpoint in the center of the circle and one point on the circle.
What is a radius?
200

Diameter = 17. What is the circumference?

What is a 53.38?

200

This is the length of the minor arc intercepted by a central angle of 120 degrees and a diameter of 96 meters.

What is 100.53 meters?

200

In circle o, if arc AB is congruent to arc CD, then the central angles AOB and COD have this relationship.

What is congruent?

200

This is the measure that describes the relationship between a minor and its major arc.

What is 360 degrees?

300
A line segment with both endpoints on the circle (chord) that passes through the center point.
What is a diameter?
300

Radius = 12. What is the circumference?

What is 75.36?

300

This is the arc length of a circle with a diameter of 8 mi and a central angle of 165 degrees.

What is 11.5 mi?

300
This is the size of the central angle in a semicircle.
What is 180 degrees?
300
The measure of the major arc if the minor arc's measure is 40 degrees
What is 320 degrees?
400
This is a line which intersects the circle in exactly one point.
What is a tangent?
400

Radius = 17. What is the circumference?

What is 106.76?

400

This is the radius of a circle with an arc measure of 240 degrees and an arc length of 62.8 km.

What is 15 km?

400

This is the measure of the adjacent central angle to a 21 degree central angle in a semicircle.

What is 159?

400

The measure of arc CD is 73 degrees. This the measure of its major arc DEC.

What is 287 degrees?

500
This is a line that intersects the circle at two points.
What is a secant?
500

Radius = 2.8. What is the circumference?

What is 17.584?

500

This is the arc measure of a circle with a radius of 11 cm and a length of 51.8 cm.

What is 270 degrees?

500

This is the value of x when a circle has 3 central angles of 148 degrees, 150 degrees and 31x.

What is 2?

500

This is the value of x where 2 arcs in a semicircle measure 5x + 23 and 17 x - 41.

What is 9?