30 point
Select all that apply.
A.
A circle is the set of all points in a plane that are a given distance, the radius, from a given point, the center.
B.
A sector is a fraction of the circle circumference.
C.
A segment of a circle is the part of a circle bounded by an arc and the segment joining its endpoints.
D.
The measure of an arc is equal to the measure of its corresponding central angle.
E.
Arc length of a circle is the region bounded by two radii and the intercepted arc.