Circumference: The circumference is the distance around the outer edge (perimeter) of a circle and can be found using the formula C = 2πr, where r is the radius.
Arc Length:Arc length represents the distance along an arc or part of a circle's circumference.
Tangent Line:A tangent line touches a curve at only one point without crossing through it. On a circular track, this would be represented by someone standing right next to it without stepping onto it.