question_answer 20)

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) point in the exterior (g) a sector (h) a segment

Answer:

(a) In the given figure, point O is the centre of the circle. (b) Three radii of circle in the given figure are OA, OB and OC. (c) Here, OA and OC are radii such that OA and OC are in a line. So, AC is the diameter i.e. diameter \[=2\times \]radius. (d) In the given figure, ED is a chord of circle. (e) Points P and O are in the interior of circle. (f) Point Q is in the exterior of circle. (g) A region in the interior of a circle enclosed by an arc on one side and a pair of radii on the other two sides is called a sector. In given figure, OAB is a sector. (h) A region in the interior of a circle enclosed by a chord and an arc is called a segment of the circle. In given figure, region enclosed by ED is a segment.