Question

what is sector and segment of a circle

Answer 1

Sector
A circular sector or circle sector is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector
Segment
A chord of a circle divides the circle into two regions, which are called the segments of the circle

Answer 2

DEFINATION OF A SECTOR - The part of a circle enclosed by tworadii of a circle and their intercepted arc. A pie-shaped part of a circle.
DEFINATION OF A SEGMENT - The region between a chord of a circle and its associated arc.