A pie chart,also called an area chart,is a form of line chart that shows a cumulative effect; all the lines add up to the top line,which represents the total.

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A line chart illustrates trends over time or plots the relationship of two variables. A surface chart, which is also called an area chart, is a form of line chart that helps you illustrate changes in the composition of something over time.

A Pie Chart,also Called an Area Chart,is a Form of Line