180° rotational symmetry.
8 March 2015
 This drawing is available on Wikimedia Commons with a free license CC BY-SA 4.0 (Attribution-ShareAlike 4.0 International) - © Basile Morin
      
      
 My ambigrams on Wikimedia Commons 
      are available with a free license CC BY-SA 4.0 (Attribution-ShareAlike 4.0 International).
      
   
Take a look also at my paintings on canvas.
© Basile Morin | contact : basile.morin@gmail.com