Gets or sets the angle of the first slice in a pie or doughnut chart.
An integer value that specifies the angle, in degrees, by which the slice is rotated.
Note that the order in which data points are plotted on a pie or doughnut chart is determined by the order of data on the worksheet.
The angle specified by the FirstSliceAngle property is measured in degrees and clockwise from the top.
|0°||45°||-45° (315° in Microsoft® Excel®)|