LEARN MATH STEP BY STEP THROUGH VERY EASY PROCESS

EXTERIOR OR INTERIOR OF A CIRCLE

__Exterior or Interior of a Circle__ –

**In the
figure, ‘r’ is the radius of the circle which has its centre at ‘O’. Consider a
point ‘P’ in the plane of the circle.**

**If, OP <
r then it will be considered that ‘P’ lies inside the circle.**

**The set of
all such points in the plane of the circle which are at a distance less than
‘r’ from the centre of the circle will be considered as the interior of the circle.**

**Q is a point which
lies in the plane of the circle**

**If, OQ > r
then it will be considered that Q lies outside the circle.**

**The set of
all such points in the plane of the circle which are at a distance greater than
‘r’ from the centre of the circle is called the exterior of the circle. **

**The interior
of a circle together with the points on the circle is called a circle region.**