Arc

The arc of a sector is the portion of the circumference that connects the two radii of the sector.

In other words, it’s the curved line on a sector.

There’s a few things we can calculate for/from it, including:

The arc is a part of the circumference of the circle.

Minor arcs

The minor arc is the smallest arc of the circle - or the arc for the minor sector.

It has an angle less than \pi radians (under half the circle).

The major arc is the largest arc of the circle - or the arc for the major sector.

It has an angle more than \pi radians (over half the circle).

Question	Answer
What is the arc of a sector?	The portion of the circumference that connects the two radii of the sector; the curved line on a sector.
What is the arc in relation to the circle’s circumference?	The arc is a part of the circumference of the circle.
What is a minor arc?	The smallest arc of the circle (the arc for the minor sector).
What is the angle range for a minor arc?	An angle less than \pi radians (under half the circle).
What is a major arc?	The largest arc of the circle (the arc for the major sector).
What is the angle range for a major arc?	An angle more than \pi radians (over half the circle).