Circle                   -> {"shapeType":"circle","radius":5.0}                  -> Circle[radius=5.0]
Rectangle                -> {"shapeType":"rectangle","width":10.0,"height":4.0}  -> Rectangle[width=10.0, height=4.0]
Triangle                 -> {"shapeType":"triangle","base":3.0,"height":6.0}     -> Triangle[base=3.0, height=6.0]