Radar chart > Series Legend Shape
• Series Legend Shape – user can select a particular shape for legend.
• Go to Edit Menu > Formatting tab > Value Axis > Value Grid
1. Series Legend Shape includes the options like Circle, Square, Triangle, Diamond, Cross, ActualRect, TargetRect, HorizontalLine, VerticalLine, Pentagon, InvertedTriangle.
2. To use this function user needs to enable the legends option first, and after enabling this user needs to disable the Default Markers option in Inherit Property from Series. (Formatting tab -> Legend -> Legend Property)