Circumscribed and Inscribed Circle 

 

1. Circumscribed circle

In geometry, the Circumscribed circle or circumcircle of a polygon is a circle that passes inside a circle in such a way that all its vertices lie on the circle, or just touch the circle.   Centre of this circle is called circumcenter and its radius is called the circumradius.

2. Inscribed circle

In geometry, if a circle is present inside the a polygon in such a way that the sides of polygon are just touching the circumference of the circle then the circle is called Inscribed circle.