Step-by-step explanation:
1) Central angle:
A central angle is defined as the angle subtended by an arc at the center of a circle. The radius vectors form the arms of the angle.
It is the angle formed by one slice of the pizza
2)Radius:
a line segment extending from the center of a circle or sphere to the circumference or bounding surface.
Length of one side of the slice of the pizza
3) Minor arc:
A minor arc is the shorter arc connecting two endpoints on a circle . The measure of a minor arc is less than 180° , and equal to the measure of the arc's central angle . A major arc is the longer arc connecting two endpoints on a circle.
The curved length of one part of the pizza
4)Diameter:
A straight line that runs from one side of a figure and passes through the center Measure the diameter of the circle.
The twice the length of one slice of the pizza
5)Major arc:
The curved length of the remaining slices of pizza after one has been removed
6)Semicircle:
In mathematics (and more specifically geometry), a semicircle is a one-dimensional locus of points that forms half of a circle.
The combination of four slices of pizza