The portion of a circle in between two parts
Arc
What is the measure of arc AD?
38
An angle whose vertex lies on a circle
inscribed angle
The measure of the angle formed is equal to 1/2 the sum of the intercepted arcs
Interior angles
Find the missing angle.
39°
Line or line segment that begins outside the circle, posses through one side of the circle and ends at the other side of the circle
Secant
Set of all points in the plane equidistant from a single point called the center
circle
if 2 inscribed angles intercept the same arc, then the angles are congruent
corollaries
Find the measure of each angle indicated.
31°
Which of the following terms best describes Angle d?
exterior angle
A straight line segment whose endpoints lie on the edge of the circle
Chord
which is minor arc?

AB
Find m∠PRQ.
51°
What do the angles in an equilateral triangle measure?
60, 60, 60
Find the measure of the indicated angle
45
The arc that is found between the two endpoints of an angle of the circle
Intercepted Arc
Which best describes line AB?
Secant
44
Solve for x.
-8
What is the measure of angle b?
36
The distance between the two points on the arc
Arc Length
Circles with exactly the same radius measures
congruent circle
70
Find the measure of each angle indicated.
25°
Which of the following angles can you add together to equal angle d?
Angle a and Angle b