i. daire dilimi, parça, kısım; sektör, alan. People in public sector will avail themselves of this right. (Kamu sektöründe çalışanlar bu haktan yararlanacak.)

A part of a circle comprehended between two radii and the
included arc.

A mathematical instrument, consisting of two rulers
connected at one end by a joint, each arm marked with several scales,
as of equal parts, chords, sines, tangents, etc., one scale of each
kind on each arm, and all on lines radiating from the common center of
motion. The sector is used for plotting, etc., to any scale.