radial symmetry means an animal has similar body parts dispersed in all directions around a central axis
circle is radial_thing. radial is car_tire. radial_thing is axisymmetric_object. radial_asymmetry is asymmetry. radial_symmetry is symmetry. radial_tuberosity is bone. crossbones is symbol. hemisphere is radial_thing. directivity is radial_asymmetry.