1. From the figure, identify :
(a) the centre of circle
(b) three radii
(c) a diameter
(d) a chord
(e) two points in the interior
(f) a point in the exterior
(g) a sector
(h) a segment
(a) O is the centre of the circle.
(b) OA, OB and OC are three radii of the circle.
(c) AC is a diameter of the circle.
(d) ED is a chord of the circle.
(e) Points O and P are in the interior of the circle.
(f) Point Q is a point in the exterior of the circle.
(g) The shaded region OAB is a sector of the circle.
(h) The shaded region EDE is a segment of the circle.