ʻO ka huinakolu maʻamau, quadrilateral, pentagon, convex triangle, pōʻai a me ka rhombus. ʻO ke anawaena o ka pōʻai i kākau ʻia o ka ʻaoʻao ʻaoʻao ʻo ia ka ʻāpana kumu o ka ʻili, a ʻo kona nui (mm) series ʻo 5.56, 6.35, 9.52, 12.70, 15.88, 19.05, 25.4…. He puka ko kekahi ma ke kikowaena, a he puka ole kekahi; ʻaʻohe a ʻokoʻa paha nā kihi hoʻomaha; ʻaʻohe mea haki chip kekahi, a ʻo kekahi me nā ʻaoʻao ʻelua.