Symmetry

"We seem symmetrical. two eyes, two ears, two arms, two legs; two ovaries or two hairy testicles." 

 "Dance comes in many different forms.We may not have rotational symmetry, but we do have another type of symmetry called mirror symmetry. Dancers use symmetry and geometry to improve their performances and make them visually appealing. We enjoy looking at symmetrical things because our brains like to hunt for patterns. So when a dancer lifts their arms together, or traces out a square as they move, they’re making use of maths to create a better dance."