Джерела

URL:https://pustunchik.ua/ua/holidays/new-year/tajny-snizhynok

URL:http://tut-cikavo.com/pryroda/tvaryny/ryby/549-tsikavi-fakti-pro-morsku-zirku  

URL:https://uk.wikipedia.org/wiki/%D0%9C%D0%BD%D0%BE%D0%B3%D0%BE%D0%BA%D1%83%D1%82%D0%BD%D0%B8%D0%BA

 URL:https://ru.onlinemschool.com/math/formula/regular_polygon/

URL:https://www.youtube.com/watch?v=OixrKsB98Hs

URL:https://www.youtube.com/watch?v=vIbl7qDdsVQ

URL:https://vseosvita.ua/library/matematicni-zakonomirnosti-zivoi-prirodi-5-pravilni-mnogokutniki-148406.html

URL:https://www.youtube.com/watch?v=GfDxHnrNDS4

URL:http://doslidnykucheni.blogspot.com/p/blog-page_62.html

URL:https://www.youtube.com/watch?v=8iLbMkUPha8