In this example, you can see how to render and configure polar and radar charts with a line series. The type of series can be changed using the Series Type dropdown list in the properties panel. Also, the angle can be changed and the series can be inversed using Start Angle and Inversed properties.

Tooltip is enabled in this example. To see the tooltip in action, hover a point or tap on a point in touch enabled devices.

More information about the polar and radar series with a line type chart can be found in this documentation section.