Examples of symmetry

 This is an example of asymmetry.

http://www.ebsqart.com/Artist/Maureen-Frank/19145/Art-Portfolio/Gallery/Asymmetrical-Mandalas/Crazy-8s-in-Space/475754/

 This is an example of the rule of thirds.

http://www.jakegarn.com/the-rule-of-thirds/

 This is an example of radial symmetry.

http://www.melrosewheelchairs.com/index.php?main_page=product_info&cPath=8_2&products_id=17

This is an example of symmetry.

http://www.kazuya-akimoto.com/blog/2007/11/19/nazca-symmetry-new-geoglyphic-decorative-raw-art-ornamental-archaeological-geographical-symmetrical-symbolic-animal-figure-line-pattern-symbolic-symmetrical-line-patterns-metallic-colors-ancient-glyph/