RadarShape Inherits: Enum Shape of the radar grid and data polygons. Properties CIRCLE – Draws radial circles for the grid and data outlines. POLYGON – Draws straight-edged polygons for the grid and data outlines. Properties# CIRCLE = 'circle' # Draws radial circles for the grid and data outlines. POLYGON = 'polygon' # Draws straight-edged polygons for the grid and data outlines.