resources/polygon1.txt resources/polygon2.txt resources/polygon3.txt resources/polygon4.txt resources/polygon5.txt resources/polygon6.txt resources/polygon7.txt resources/polygon8.txt resources/polygon9.txt resources/polygon10.txt resources/polygon11.txt resources/polygon12.txt resources/polygon13.txt resources/polygon14.txt resources/polygon15.txt resources/polygon16.txt resources/polygon17.txt resources/polygon18.txt resources/polygon19.txt