Symmetry and Asymmetry

  Symmetry is when you split something in half and you get the same exact thing on each side. For example, in this picture, if I were to cut it vertically you will get the exact same mirror image on both sides. 

Asymmetry is when neither of the sides you split vertically or horizontally will be the same on each side. Like, in this picture, no matter how you cut it, it will not be balanced equally on both sides.