A straight line that goes from the center of the circle to edge of the circle.
radius
A tangent and a radius of a circle make this type of angle at the point of tangency.
right angle (90 degree angle)
The radius does this to a chord when they are perpendicular.
bisect
Find the area of the circle
216.4 m squared
What does measure mean in a circle
degrees
A straight line that goes from one side of the circle to the other side of the circle through the center.
Diameter
If the length from AC is 15 cm. What is the length of line segment BC?
15 cm
These types of angles are equal when they share by the same arc.
Inscribed Angles
15.22 cm
What does length mean in a circle
unit of measure (ex: inches, feet, cm, yards, etc)
A segment whose endpoints lie on a circle.
chord
What is the measurement of angle x?
20 degrees
What is the length of line segment x?
9
A merry-go-round has a diameter of 36 feet. If a passenger gets on a horse at the edge of the wheel and travels 38 feet, find the angle of rotation to the nearest degree.
121 degrees
How is the measure of an inscribed angle related to the arc.
It is 1/2 the measure of the arc
A line that only touches the circle at one point.
Tangent
What is the measurement of the radius of the circle?
13.3
An inscribed angle, connected to the end points of a circle's diameter, has this angle measurement.
90 degrees
Solve for x.
19
Find the value of x. Assume that segments that appear to be tangent are tangent.
8.4
An angle with endpoints located on a circle's circumference and vertex located at the circle's center
central angle
What is the measurement of angle B?
38 degrees
If you were to draw two different chords and bisect them, the two bisectors would intersect at this point.
center (origin) of the circle
11
What is the length of ED
51