Pie chart

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.

单词	Circle chart
释义	Circle chart 原声例句世界历史百科全书 The ancient Egyptians had also developed a 360 degree circle chart of the night sky by the First Intermediate Period between 2181 and 2040 BCE. 古埃及人在公元前 2181 年至公元前 2040 年的第一中间时期也绘制了一幅 360 度的夜空圆形图。英语百科 Pie chart 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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Circle chart

Pie chart