A set of points which extend infinitely in both directions is called 

A line segment joing the centre and any point on the circle is called 

A set of points which is a part of line with two end points is

Number of line segment possible with three collinear points is 

Number of line that can be drawn from two distinct point on a plane 

In the given figure point p is called 

A line PQ is symbolically written as 

Number of arcs made a chord on a circle

Value of π is equal to (opproximately) 

Longest chord of the circle is