Try to recall all types of angles.

Think of any quadrilateral and find out the number of corner points and line segments.

Think of the definition of different terms which are related to circle.

Try to find the number of corners in a rectangle.

Use the relation between radius and diameter of a circle.

Try to find the number of corners in a pentagon.

Draw a triangle and try to count corner points and line segments.

Try to recall the name of angles.

Draw a hexagon and try to count corner points and line segments.

Try to recall the name of angles.