A circle graph, or a pie chart, is used to visualize information and data. A circle graph is usually used to easily show the results of an investigation in a proportional manner. The arcs of a circle graph are proportional to how many percent of population gave a certain answer.
What does a circle graph have?
A circle graph is a circular representation of data with different slices representing a percentage of the total. Each wedge in the circle is proportional to the quantity it represents.
Which graph is circle graph?
Kloks, Ton (1996), "Treewidth of Circle Graphs", Int. J. Found.