Which of these is part of the circumference of a circle? sector arc center area

An arc is a portion of the circumference of a circle, like a slice of pizza! It’s the curved line connecting two points along the circumference, making it a fun concept to visualize when thinking about circles. Maybe you can imagine tracing an arc with your finger around a round cake! On the other hand, a sector represents a "slice" of the circle area enclosed by two radii and an arc. Think of it like cutting a pie into wedges; each wedge is a sector of the whole circle. So next time you're slicing up a treat, remember these circle concepts!