In Microsoft Excel, you can create a Half Pie Chart if your data range has a total. A Half Pie Chart is a 180 degrees graph that represents a composition as a whole.

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 ...

Learn how to use and read a pie chart with this KS2 Maths guide from BBC Bitesize.

For a Pie control, the rotation angle is the current angle relative to the 0 degree radial. The tilt angle is the angle relative to the chart's horizontal diameter. To set a rotation angle or tilt ...

If the numbers and angles in a pie chart do not correspond, there is a risk that the viewer will believe the wrong data.