Circle Vocab
Central Angles
Inscribed Angles
Interior Angles
Exterior Angles
100
The portion of a circle between two points
Arc
100
What is the measure of arc AD?
38
100
An angle whose vertex lies on a circle
inscribed angle
100
Which angle is an example of an inscribed angle?
(must be named properly)
<TDS or <SDT
100
Find the missing angle.
39°
200
Which best describes line AB?
Secant
200
An angle whose vertex lies in the center of the circle
central angle
200
If 2 inscribed angles intercept the same arc, then the angles are _________
Congruent
200
Find the measure of each angle indicated.
31°
200
Which of the following terms best describes Angle d?
exterior angle
300
A straight line segment whose endpoints lie on the edge of the circle
Chord
300
What is the measure of arc AB?
142 degrees
300
Find m∠PRQ.
51°
300
What do the angles in an equilateral triangle measure?
60, 60, 60
300
Find the measure of the indicated angle
45
400
Define a tangent line.
A line or line segment that intersects a circle at exactly one point.
400
Find the measure of arc PRQ.
275 degrees
400
44
400
Solve for x.
-8
400
What is the measure of angle b?
36
500
The distance between two points on an arc. (measured in cm, ft, in, ... )
500 BONUS points if you can also provide the formula to calculate this distance.
Arc Length = 2(pi)(radius)(x/360)
500
An arc that measures exactly 180 degrees
Semicircle
500
70
500
Find the measure of each angle indicated.
25°
500
Which of the following angles can you add together to equal angle d?
Angle a and Angle b