Strofoiden
https://www.dropbox.com/s/kb3gn3py3nap1tl/Strofoiden.docx?dl=0
https://www.dropbox.com/s/p8rc0bsb5x65p8d/L%C3%B8sning%20strofoiden.docx?dl=0
https://www.dropbox.com/s/jiyy90pu0lbphbg/Strofoiden%20%282%29.png?dl=0
