Pie charts are a way to show data. Pie charts show proportions of a whole. The circle of the pie chart represents the whole. That's a full 360 degrees. Each part, or slice, represents part of the ...

A pie chart can show collected data in sectors. Each sector can be labelled, or can be colour coded with a key. When drawing a pie chart, a protractor will be used to draw the angles accurately.

Last week, we wrote about our loathing of pie charts. That piece seems to have struck a nerve, so it's about time we addressed a second major beef with modern data visualization: infographics have ...