. Define sector of a circle
A sector is a portion of a circle that may be defined based at the 4 points stated below:
♦ A part of a circle is covered by radii and an arc.
♦ A circle is divided into sectors and the divided parts are called minor sectors and major sectors.
♦ The large part of the circle is the main sector while the smaller portion is the minor sector.
♦ In the case of semi-circles, the circle is divided into equal-sized sectors.
♦ The 2 radii meet at the part of the circumference of a circle called an arc, formed a sector of a circle.