Simple curve a curve is a simple curve if it does not cross itself.

Simple closed curve a closed curve is called a simple closed curve if it does not pass through one point more than once.

Open curve is a curve which does not cut itself is called an open curve.

A simple closed curve does not cross itself and its ends are joined. How many points lie in the exterior of the given curve?

A simple closed curve does not cross itself and its ends are joined. .How many points lie in the interior of the curve?

A simple closed curve does not cross itself and its ends are joined. how many points lie in the region of the curve?

Simple closed curve a curve having the same beginning and ending point and which does not cross itself is called a simple closed curve.

Closed curves a curve which cuts itself is called a closed curve.