A Pie Chart (or a Circle Chart) is broken down into its constituent parts out of the total of 360 that is allocated proportionally to the total of each part. The Pie Chart displays data, information, and statistics with varying slice sizes, where each part shows the relative size of each value.
Reference Definition by Wikipedia: A Pie Chart (or a Circle Chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents. While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented. The earliest known pie chart is generally credited to William Playfair’s Statistical Breviary of 1801.
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